The following are NOT examples of small ideas! Multiplayer, DLC, story direction, art direction, location suggestions, scale suggestions, questlines, or anything that would be telling the developers how to do their job/ redefine the TES experience.
The following are examples of "small" ideas. Spears!, locational damage, climbing animations, ability to "stockpile" followers, hardcoe mode, ability to see through windows, return of spellcrafting or any removed system from a previous game...etc
I am very happy to say that of these small suggestions that were listed, about 70% of them were actually implemented into the game. to see this list as it was transplanted here after the removal of the forums on Facebook go http://www.gamesas.com/topic/1239826-small-favors/page__hl__small+favors__fromsearch__1. Yeah, I'm Erich.
Now these small favors are, of course not always "small" at all. Things like reimplementing spellcrafting or having see-through windows take real time and effort to accomplish on the development side of things. For this I specify, that by "small", I mean things that will contribute to increasing the realism, playability and cohesiveness between the two extremes. We aren't here to tell the developers how to do their jobs.
Have fun!
EDIT: I find that anything that could be "tested" in a game like FO4 or the CK in Skyrim tend to be the best suggestions!