Add ons. SE - save yourselves a lot of development time. Introduce a kit. Let US handle this mundane work for you, and break anything you don't like.

Take this VERY IMPORTANT page out of the Blizzard development handbook, and do yourselves a favor and don't do a half-ass job like Trion did.

This is a winning formula for gaining many more players who like a customizable UI and smooth gameplay experience.