I have to say I fully disagree on TNA adding new wrestlers to the X-division. The way the X-division is currently being booked is fundamentally wrong, and until they can work with the roster they currently have, why fill it with new guys?
For a start, Suicide needs to be removed from our screens. I have no idea who came up with this genius plan to take the guy from the video game and stick him on TV, but it straight up sucks. We're expected to believe that a guy who has 'amnesia' and therefore has no idea who he is, decides to wear a mask? Also, he has no supernatural powers, and has never been portrayed that way, so why is it he disappears so quickly? Most importantly, this guy has the measure of both the Guns and Lethal Consequences. How are we supposed to buy that these two tag teams, can't match this one guy? Even considering that in all their 5 man matches, MCMG quite blatantly work together and are happy for the other to take the title.
Also, for a good couple of years now, TNA has been happy to let the X-division descend into a massive clusterfuck. Why does every X-division match have to feature 8 guys? I don't remember this when AJ and Joe were in the X-division? Nobody gains any credibility in the division because either, the matches are overly gimmicked, so you don't defeat anyone technically, there are so many guys in the match that you have idea of how people are supposed to be positioned within the division. When Jay Lethal beat Angle, that was one on one, and you knew this meant Jay Lethal was highly rated, because he went over the World Champ. Now what do we have? Suicide, with 4 number one contenders all the time, and (I don't keep up with spoilers and I've missed the last couple of impacts, so i'm not 100% whats happening) either the British Invasion or a returning Homicide (it's hernandez who's the long term out right?) will use the feast or fired briefcase and steal a win. So the Champ who has ruined all his contenders credibility, will ruin his successor's credibility by losing when he's at a disadvantage
My point exactly, I mean, didn't WCW try to take a character from a video game and re-create him in the ring? I'm sorry for putting you all through the horror of remembering that, but I think we know what happens when video game character and wrestling characters mix, it ends badly.
As for the original question posed, I think that maybe a couple of new X Division wrestlers could work, but if TNA wants to rebuild the X-Division, here's what needs to happen.
1. Get rid of the Legends Title. For heaven's sakes, you have two-hours of TV time a week, you don't need five titles on your show. The title in it's own right is worthless, it takes up way too much time also. I boubt anybody really cares about the Legend's Title and I honestly don't think it should've ever become a sactioned title, it should've been like Taz's FTW Title, in where Booker could have introduced it and worn it around but not actually defend it, as it doesn't count. I can only hope that, for the sake of the division that was so good to him, he retires the title so the X Title gets more time.
2. Narrow your talent. Get the Guns and Lethal Consequences in the tag division and out of the X Title picture. Get rid of Kiyoshi, Jesse Neal, and, even though I like him, Shark Boy, as he hasn't had anything close to entertaining since Shark Boy 24:7. As pointed out before, Suicide needs to commit suicide and Kaz needs to come back. Now our X-Division consists of Homicide, Daniels, Red, Eric Young, and Doug Williams on the side. Now, let's relegate Red to a talent enhancer. Okay, so maybe we do need a few new wrestlers. May I suggest: Jack Evans, Kenny Doane AKA Kenny Dykstra, "Krazy K" Kirby Mack, Paul London, Shannon Moore, El Hijo de Rey Misterio (Rey Rey's cousin, looks like him, lucha libre style, and only 2 years into his career), Essa Rios, just to name a few.
So basically, they could use a few new wrestlers, and they need to thin out the X Division talent they already have.