There is no such thing as "too many options."
You need to make decisions based on what existing users do with existing viewers, how existing users set those viewers, and whether most users do or don't do or not do everything that's available.
SL is a virtual world, not a video game. We have artists, business people, teachers, gamers, socialites, builders, machinimists and more, and they all use the same viewer in different ways. To restrict options is to restrict creativity.
Instead of trying to figure all of this out on your own, you should create an extended user survey as ask us. Because we're the ones that use the software day in and day out. We know what we like, what we want and what we don't want - and what we don't comprehend at all. We set our viewers based on what we do and how we do it - and you shouldn't assume that a complex viewer is the antithesis of Resident happiness, unless you've never loaded a copy of Emerald in your life.
Instead of "too many options," you should focus on "how do our customers use the software they're logging on with the most," and emulate that.