Well some repaints work, some dont. But it really depends on the individuals taste. Some don't like the original colors the mold comes in , but, when they repaint it to something else, it kinda makes it more appealing and so the "want" factor changes from "pass" to "buy". Some repaints are an obvious blatant excuse to rake in more moolah before the mold degrades - ROTF soundwave, but in most cases are fail, fail, fail.
I for one just go nowadays with modern released TFs if I like how it looks to me. Seekers, yes bring on the rainbow squad, Ill buy one of each. umpteenth time recolor of bumblebee 
, uhm nah. If the color works- for me, Ill buy it, heck I might even skip the original and go for the recolour version instead. Also price determines it as well... wait for a sale is always good.
Wanted AM partner Vanguard, Myclones Dirge, G1 Victory Leo, e-hobby Dark scream ( the black version), e-hobby Magnificus
Parts- AM partner Basher-side guns, G1 Actionmaster Elite Windmill's blades[I][B]