My first suggestion is for there to be a suggestion category in this forum. My second is that WP should be made so that ALL functionality is built into WP, and I mean ALL plus widgets, plugins, etc., rather than into the themes.
As it is now, some themes have functionality that other themes do not have. So themes work better than other themes. But if all functionality were built into WP and its plugins and widgets, then there would be no difference except for appearance, when it comes to changing themes.