Good indexing systems don't have the problems you describe. Campy shifters actually provide the best of both worlds in my opinion. Precise indexing on the rear and "micro-indexing" on the front. Micro-indexing is a ratcheting mechanism that gives you about a dozen detents so that chain-rub is not an issue.

With a Jtek shiftmate you can mix campy shifters with shimano derailleurs. Aside from Chorus and Record, used Campy shifters aren't too outrageous in price.

Campy on a Denali. Now that would turn some heads on your next group ride.