I think lifting by a few inches would be feasible for any robot. However if they want to lift a robot the full 24 inches (which is something like 120 points), then a dedicated lifter robot who is built for the sole purpose of lifting another robot up 24 inches (and maybe playing some defense) would be the only way I see this as plausible.

So a dedicated lifter bot paired with an awesome scoring robot leads to a pretty high score, if I say so myself. It may be a good idea to make one....