sounds awesome!
a similar story:
My friends and I started a weekly game night about 2 years ago. So once a week we get together to play games... Well it all started with Heroquest, naturally.

. and after awhile (once the quest book was completed) my friends had been bitten by the "board game bug". So we started playing all sorts of games... Last Night on Earth, A touch of Evil., Carcasone, Dominion, Battle Star Galactica, Munchkin, Talisman... just to name a few! anyways... after playing all these games and more, my group and i started brainstorming a game of our own. A unique game that would try to meld what we liked from other games and keep what we didn't like at bay. Well needless to say, this game is still in the works, and one day I will share it with this forum. But I just wanted to share that because, like yourself, I too wouldn't be having my beloved game night as well as this awesome idea of creating a game myself if not for Heroquest and equally if not for Ye Olde Inn. Hurahhh!
well I will be keeping up with this thread and your progress.. and can't wait to beta/demo test your game with my game night group.
keep up the good work!
oh ps. I dig the name "delve"