Pay 2 waifu is everything about looks, and stats are a generally an afterthought. AKA it's less about "I need a unit that can do X", it's more about "I want this unit because my dick compels me".

In Aigis, there's plenty of units who are niche at best, if not nigh-useless, but have great designs, so people level/awaken them anyway, like, say, the sailors.

In FKG, I barely pay attention to stats/abilities either. Do I *need* a character that can negate speed panels? No, I have Lilac for that (let's conveniently ignore how she would plain not drop for me the first time her spotlight came). Is Nerine/Christmas Rose sexable? Absolutely.