I think it is a mixture of getting rights to some of the wrestlers the Undertaker has faced, finding a good time to do an Undertaker based showcase and deciding what to feature. Stone Cold's Showcase was probably a challenge for them due to the feuds he has been in and trying to avoid it being a meekmanfest thus including some lesser known feuds and some random matches. Undertaker would be very hard to cover without at least, 100 matches and would be best to feature the feuds entirely via videos and matches. E.g. Randy Orton and Undertaker's feuds would need proper coverage. That and I want to see the mindgames again.
Sting probably will get featured in the future but if they continue to do Showcases. I can see them scrapping it for future titles and replacing it with something like Story Mode.
Back to TNA. Apparently, Dixie has already entered talks with Mister Meekman and TNA is going to die. Dixie seems the type to have a "If I couldn't make it a success, no-one else can." attitude and is petty. She fancies herself as a Miss Meekman character and is a crap businesswoman who is the main cause of TNA's problems. Talent not being paid on time, ring crews being replaced if they dare to ask about their payments, HOAK HOGAN and pals being hired because she heard of them etc..
It is worth keeping in mind that TNA has massive amount of debts and whoever buys them has to cover it. Billy Corgan may have the cash to do so but it is a massive risk on his part and I really want to see TNA fight their way back as they have been doing so this year. WWE? Just another WCW for them. Purchase, buy out some contracts, settle the debts and own the tape library. :-/
Corgan really wants to turn it around. WWE would shut it down, take what they want and cast it away or do what they did with WCW. Have one crappy match, blame it on WCW and refuse to make it into another brand because of one awful match. That and they made a mistake of not getting WCW's biggest names. Sting, Goldberg would have been a fantastic addition to WWE. Granted, Goldberg is a bit crap but a massive name.
Sadly, it will be WWE that gets TNA. Corgan has limited funds and WWE does not. The Network, the merch, they can afford to outbid anyone or steal it out from under COrgan.
However, it would be nice if WWE did purchase them and acted as a parent company. Hands off on everything, provides the funding and uses it to target the audiences that dislike WWE's PG rating. It is unlikely though.
TNA talent will be buried. Meekman hates having talent he hasn't had a hand in and usually goes out of his way to prove that WWE is better. Look at Sting vs Triple H. No reason for DX and the NWO(which is stupid as Sting was fighting NWO towards the end of WCW) and DX is obselete. I mean, Triple H became the thing they mocked.
EDIT: UPDATE: There's reports that Dixie is causing a lot of issues with the sale and WWE is flipflopping on whether it's worth buying TNA or not. Flights and Tapings have been cancelled, Talent is nervous. Corgan has offered what Dixie has asked for($4million) but she seems to either be out of her depth or she is being petty and dragging it out in the hopes WWE outbids him. She will be out of power either way. Corgan wants her gone as she done more harm then good to TNA. WWE won't care about her and just use the Tape Library. However, if WWE does buy it, there is only one and i mean one good outcome. Josh Matthews and Pope are gone! They are medicore at best. Josh Matthews tries to come off as "i'm a big boy today." and Pope's voice is well, too deep. It sounds like either his mike is set on the lowest pitch or he just doesn't have the voice for commentating. Wrestling, interviews? He would have a better chance at being good at. That and both are not really good. Even Micheal Cole and JBL are better. They both suck nowadays.
TNA really needs this sale by the end of tomorrow or the company will literally cease to exist. Apparently, they are out of funding, Corgan has threatened to not fund Bound for Glory and i don't blame him. He has funded 3 tapings so far and Bound for Glory is TNA's Wrestlemania. No incentive for him to put his cash into it if Dixie is going to be spiteful and sell it to WWE. WWE probably would allow BFG to run as a farewell. They did a final show with WCW despite both hating each other and WCW well, WCWing against them. THey had Goldberg, HOAK HOGAN, Sting and a lot of talent. They fecked all of that up. If they used all of them well, WWE may not be around nowadays. TNA? Kinda a smaller, even more incomptent(thanks to Dixie) version of WCW for a few years. If your champion can't afford to live well, you suck. Not the Kurt Angle you suck. The You really do suck, suck.
TNA as a brand is dead. Corgan probably will either run Bound for Glory, make an announcement about the future, TNA ceases to exist and new reboot is announced or announce that TNA is no longer in operation but it's successor will launch. TNA is tainted beyond repair. Granted, It is doing well to fix itself but TNA is well, it's name is slang for something else, HOAK HOGAN and pals destroyed it, bad decisions, Jeff Hardy coming out high against Sting and bare in mind, Sting gave up the chance to wrestle the Undertaker at Wrestlemania 27(i think). These are just a few exampls of TNA's bad history.
I hope Corgan gets it or WWE and Corgan go behind Dixie's back, make a deal. (E.g. The tape library of TNA is purchased but all the debt is taken on by WWE and Corgan retains all the talent, ring and WWE is invited to invest in it. Not involved in it but something like ECW getting funded behind the scenes.)
Also, TNA gave up the chance to have Paul Freaking Heyman! Yes, teh dude is crap at running a business but he is excellent at coming up with ideas, pushing and finding talent etc.. He gave Steve Austin a chance to rant and that caused WWF to pick him up. Two matches in ECW, WWF and the Texas Rattlesnake was born.
Or in an unexpected swerve, Randy Orton RKOs Corgan, Dixie, half of the WWE representatives, all of the TNA roster, the TNA audience, the TNA ring itself and announces himself as the new owner as TNA. :P
Joking aside, it is said there is a mystery third bidder. If it's HOAK HOGAN, TNA is dead. Deader then the Deadman. Deader then WCW. Deader then, you get the drift.