Depending on the character, there's more to them than that. Just because support dwindles away for a character (unless they're a flavor of the week) doesn't mean that developers forget, but holding the test of time helps.**** that might as well be anyone who wasn't made pre-Wii U would be holding on to.
I know people rat on Fire Emblem for having an ungodly amount of characters, but at least 1. most of them showcase different games and 2. the series has been on-going for a long time as part of Nintendo's history.
Really the only complaint I have about that is they just need to localize Roy's game already
...
so when are they gonna finally reveal isaac