<2 cents>
FYI, the home automation software world is extremely competitive. There are only a few major (and commercial) players in this field, some great open source projects, and many failed/abandoned projects.
If you want to become a major player, you need to offer something which others don't. Homeseer, CQC, Elve, have been around for a while, and that's only because they listened to what their customers wanted. Plenty of projects out there which think they can do it better, and no matter how right they think they might be, you don't hear anyone talk about them.
So you need to figure out who your audience is (DIY or Pro?), and if you are serious about making this stand out from the many many other custom solutions out there, or if this is just for fun/time filler.
Many of us have tried most of the better software solutions out there, so if you want to improve your product, you really should consider our feedback. Most of us WANT you to succeed, competition is good for everyone, and we are all still looking for that holy grail of software which does everything we want it to do.
The portal is down right now, but there is a list of all home automation software on the market, and that list is HUGE!
</2 cents>