The way I see it, the X-division has declined since they added in weight limits.
Hell, when was the last time you remember an ultimate x, or even better, an elevation x match?
At first, I thought it would be a good idea to have a "cruiserweight" division, which is essentially what the x-division is now, but TNA just doesn't have the roster for that, and it's ruining the x-division. I'd love to see AJ or Joe or ever Mr Anderson get in there and start having feuds for the x-division title on their way (back) to the heavyweight title. Would certainly make things more interesting, and those are the kinds of personalities Aries would play better with. Meanwhile the green guys can work towards the t.v. title and earn their stripes a bit.