Now that we're guaranteed to see a triple threat at Slammiversary, it seems fairly likely that it will be King, Lashley & EY in the Main Event. I could easily see MVP stacking the deck against Joe & Aries in their qualifying matches, in order to assure they'll make it to the World Title match. However, I could also see the triple threat happening with only one of MVP's boys, and I think if that's the case it would end up being King vs. Joe vs. EY.
Honestly, I see King vs. Joe vs. EY being a very likely scenario as well (possibly being even more likely than both Lashley and King competing in the Main Event). Since his latest return to TNA, Lashley seems to get worn out quite early in his matches, even when he's only been in the ring a short time. Lashley seems to be drenched in sweat within seconds of being in the ring, and I don't really see him wanting to pull double duty tomorrow night. Couldn't you see Lashley saying something like "not unless I get double the pay", or something like that? He just puts out an air of only being there for the paycheck to me, not because he cares about the business (or the storyline, for that matter). I'm just speculating of course, obviously I don't know how Lashley really feels about TNA (or the entirety of professional wrestling to boot), but either way it's not necessary to put both King and Lashley in the match. One or the other would progress the story just as easily, and it seems more likely that King would be the one to have two matches on this particular card.
Besides that, how do you convincingly book a triple threat World Title match with two guys being from the same faction - with two (seemingly) different agendas? I know it's been done before: it looks like they're on the same page...then one gets upset when the other goes for the pin, then it becomes a legitimate triple threat when EY makes a miraculous recovery - having "the match of his life" (according to Tenay & Taz).
Let's throw out just the booking of this one match, and think long-term; if it ends up being King vs. Lashley vs. EY, they'll essentially be giving the finish away. They're not going to have either Lashley or King win the title, because that would split the group up. One would become jealous of the other, not to mention how MVP would feel about it (him being their "leader", and all). If they split the trio up this early, they'd miss out on the great tag team of Lashley and King, and MVP loses his backup. EY will most likely retain no matter who is put in the match, but you remove all doubt if both King and Lashley are inserted tomorrow night.
Yes, I understand that a triple threat can be done that way (and have it look believable), but that doesn't necessarily mean that's the best way to go. It seems like a better idea to just have some sort of stipulation for the Lashley/Joe match that backfires, allowing Joe to beat Lashley. For instance, Joe vs. Lashely could be no DQ. Lashley introduces a weapon that allows Joe to capitalize on, then boom - Joe's in the main event. Something along those lines that would allow MVP to go crazy in the back, then really pull out all the stops to make sure the same thing doesn't happen during the Aries/King match (by adding more crazy stipulations, or being at ringside and making sure Aries definitely gets screwed, etc). The reverse could also happen (meaning Aries gets in the match instead of Joe), but again - I just can't see Lashley wanting to pull double duty, I just get the vibe that he doesn't care that much...maybe I'm wrong, but that's the aura he projects.
It just seems to me that there is more story telling potential in Joe vs. King vs. EY (or you could swap King for Lashley and Joe for Aries, though it doesn't seem as likely), as opposed to just making sure that it's King vs. Lashley vs. EY. I'm not sure it will happen, but at this point I'm leaning more towards only one of MVP's boys in the match. I would definitely prefer to see Aries in the match (over Joe), but I don't see Lashley making it past Joe (if that's the route they decide to go)...plus I'd rather see King in the match over Lashley. Rats, that is so damn confusing. Whomever wrestles for the strap tomorrow night, I'd put my money on EY pinning King for the finish.