If you really want to rank a 6*, I'd rather take emma than cap. Cap is great, but without a really really high to max sig he lacks in the utility aspect.Emma might dish out a little less damage than cap's famous sp2 crits, but she definitely packs a punch and has quite a lot of utility.If you want to rank a 5*, I think I'd take blade.They're all great, but I guess both archangel and iceman do what they do already exceptionally good at r4.