Which melee team to go with?

Was looking for some macros, to do actions based on the number of combo points on the target.
Found a few, which was nice.

Unfortunately, CastSpellByName is a protected function now.
So cannot run:
/run C=CastSpellByName;if (GetComboPoints()>=5) then C("Eviscerate") else C("Sinister Strike");end

It would have been nice to Ferocious Bite at 5 combo points, but otherwise Mangle.

It seems the best will be either two buttons; a combo builder and a combo use button. Or to approximate how many combo points the target has, via a castsequence.

wow that /run line took me back to early days and the oddity that was the OneHitWonder addon (Sarf wrote it I think?)

I don't see how that setup will have any viability at all other than a quick gimmick. That can be fun, don't get me wrong, and so can 5x mages casting blizzard in an AV, but hardly worth the time to level and gear up in my opinion.