Originally Posted by Unregistered

I mean the reason they don't look appealing to me is that compared to other 6* their base ability and evolution ability looks average and also i like girls with fast movement speed and all 3 of them have mediocre movement speed

I'll give you movement speed, though some maps you want varying speeds/slower speeds, but "compared to other 6*" is kind of odd to me, considering the chance of drawing ANY 6* normally is 1 in 200, so being able to guarantee getting one is great. Also, I'm not sure where you're getting the idea their abilities and evolution abilities are "average", what do you mean by "average"? All 3 boost ALL squad members' attack by 15% (all stronger boosts only affect a limited number of squad members, like BB's 35% only affects herself and one other), that's nothing to sneeze at. Frit's base ability of Attack Up on skill trigger looks bad if it's the base of 2% but at max affection, up to 30% boost to her own attack on skill activation is awesome, especially if she triggers her own Hit-All skill (note my previous comment I misread it so I underestimated it, I went back later and saw it's affection-based). Mei's Light Gauge starts at 50% is nice if you use Solar Blast and want it by the 2nd or 3rd battle of a stage, otherwise it IS mediocre, Sakura's Raid Boss buff is bad for normal RBs you want to share with friends but during RB killing events, it can be quite handy.

All in all, Frit has the best ability set for general use, IMO (50% Light Gauge is only useful if you don't just hit Auto Run and walk away and obviously wanting to nuke RBs is situational, generally reserved for RB events) but they're all WAY better than any 5* statistically, so just because some other 6*s have "better" ability sets doesn't mean you should just write them off (unless the $50 cost is something you're only going to be able to spare once every couple months and you're holding out for a Guaranteed 6* that you want more, I guess)