can someone list some opinions im looking to replace sheik and zero suit with there most broken iterations. any help would be appreciated thanks!
DEFINITELY go to 3.3 for ZSS - in that version, down+B gave jumps back, as a recovery buff, but people hadn't realized this existed at the same time as a recovery buff already in place that made doing the kick during down+B give you down+b back - so double jump -> down+B and do the kick -> double jump -> down+b and the kick -> etc. for infinite (or nearly infinite) recovery. This was obviously removed in the build right after, but that would be far and away the best version of ZSS in terms of recovery. That one also had a much better dsmash [that was where dsmash size got buffed] and dash attack, and this was before Kien randomly nerfed fair and bair (which are, as is, still VERY powerful - and was a good move on Kien's part, it just happened to be completely out of nowhere). Nair also had zero landing lag in that build.
That ZSS was broken on so many levels, and was the best one to date by far [even ignoring the infinite double jumps it was clearly one of the strongest versions of ZSS - she was still getting buffs and not getting nerfs].
Sheik had a jump cancel on ftilt, higher jumps, and a stronger uair [and fair] at some point in the past, so look back to the MAX builds. She may not have had all that at once, but I think she did (again, there was no useful chain, but whatever). 3.3 was where Sheik first really started getting nerfs, so go to MAX or MAX 1.01 and check out Sheik's changelogs for those (3.3's tells of how nair, uair, and fair all got nerfed, so MAX 1.01 was clearly a much better Sheik).
Also multi-laser ROB is most broken probably, since I think his side+b still reflected stuff too. Just in case you want a broken ROB too [I think that would be 2.X.6 or older].