Tales games just have different teams working on different games. It can seem oversaturated, but somebody must be gobbling all of them up or the series would end. Imagine if you lived in Japan where they all get released and not just 1/3 of them.

I only welcome the abundance if they keep the quality up. I really don't want to get a great Symphonia, wait through a mediocre Legendia, and then get back to great Abyss again. Skip the middle child altogether I say.