I can understand your frustration. Nobody wants to see less of the kind of games they like. I actually shared your frustration but in the opposite direction. Slow tactical games were becoming less and less and fast action Rpg's were replacing them.
Kick starter has started to bring back the old school games I liked in the past and i've started to enjoy the faster action ones as well so its a win win for me. I still don't think you have to worry too much though kick starters aren't generating enough money yet for bigger devs to jump on old school games IMO.
Other than obsidian most of the kickstater devs are relatively small or unknown and I think obsidian wanted to make a game like this all along but couldn't find a publisher to back it.
I think we will still have our AAA RPG's and such also with crossover Rpg's like dishonored and fry cry 3 (which is excellent by the way) there shouldn't be a shortage.