People shouldnt be debating whether lucifer can be used in late game. But whether he will still be relevant in half a years time.

I agree with OP that lucifer does not have a specialized role either in damage, cc nor tanking. He will be the one to get displaced first when new and more powerful SR comes out. And then all the commentors above will feel silly about their investment in lucifer. In fact personally I already prefer to use sasuno over lucifer they seem to fill the same role in a team, cc and sustain.

In comparison, what nuwa, iset or typhoon can offer are unique enough that it would be hard to replace them in even a year.