Okay, so I've made some decisions.
1. Sci-Fi obviously won the polls on both web sites (Hard-Light was the first, and another forum dedicated to Zelda with many diehard fans of other such RPGs and adventure games was the second--everyone wanted sci-fi opera)... so it's obvious what I'm working on now.
2. Aside from game-exclusive assets such as models, textures, music, sounds, source code, etc., I'd like to make the game's development process completely transparent--that is, I'm going to make a publicly-viewable wiki-style database of information regarding the game's content. Those who are developers and high-level contributors to the game will receive an account allowing them to edit pages on the wiki. Registrations to the public will be disabled and editing anonymously (that is, without an account) will be disabled.
The wiki will harbor things such as storyline outlines, voice acting scripts, progress indicators on the game's completion of development, screenshots, videos of gameplay prototypes, links to prototype versions of the game demoing certain concepts, tons of concept art--that sort of thing.
It might sound stupid, but this addresses yet another issue that contributed to the untimely shelving of Red Arm: the game was very, very poorly planned. Because I had attempted to commit all the information about the game I knew to memory, inconsistencies on ideas and what I wanted existed. As a result of this lack of a concrete plan for designing anything--be it levels, gameplay elements, you name it--I need a place that I will be able to write down ideas, say "this is how it's going to be done," and when people ask questions, I can point them to a page and be certain that I'm not accidentally lying to them. Even more prominently, while developing the game, if I ever accidentally forget something, I have a written, far-more-concrete-than-memory plan that I can look at to maintain direction during development.
Additionally, this kind of approach is great for press and development interaction, because it allows me to get a preemptive look at people's opinions of certain aspects of the game. I might even start a temporary discussion forum to allow anyone and everyone a quick way to voice their opinion on such things.