I'm struggling to really build an audience and the RPG I'm playing is almost done. What do I do?

The Elder Scrolls IV: Oblivion

I have a few people that come in and say how they love this game or whatever. But I'm almost at the end. Should I go straight to Skyrim? I feel like the audience for that is huge by comparison.

Or should I play it again with a different build and try to make the next one different somehow? Do I play a mod?

Should I maybe play the previous game, Morrowind?