Replacing the paladin

i have read that allot of people think the paladin is a bit pointless and needs replacing. i totally agree having just reached max loaded engineer, i have found its only good for the first 5 waves. i thought this might help generate some ideas that could be used instead. mine are

Roadkills walker thing (if hes still willing to work on it)

XS vehicles mod. there are two really good vehicles on this alpha called "Q-mech" and "Epsilon" allthough the latter is probably way overpowered. you can get it here http://www.xsmod.com/xyx/ut/xs/ download the alpha.

I sometimes think about replacing the paladin with the raptor or cicada, but I highly doubt this will take action.