Here is an extremely random thought and will probably get shot down in an instant.

Remember FF8 how you had to spam the square button at certain times to boost it? Or in FFX how you had 3 chances to hit the middle of the moving bar for Tidus's limit to be worth it?

Could implement something similar for relics to bypass the whole "stats only" thing. The boost would be quite substantial and would say guarentee crit hits or something similar (As if you SA'd it).

The idea is probably extremely flawed, subject to issues regarding lag, slow down the speed of the WS itself...

Think I just proved how bad an idea it was... But oh well.