I owned two Integras, first a 1995 that I wrecked in college in 1998, then this 2000 that I just totaled a few months ago (not my fault). The car is about perfect for what it is: a sporty car that is supposed to be fun to drive, provide good performance for the price (and tremendous upgradability), and an entry-level "luxury car". It was a blast to drive on short commutes on windy roads and got incredible gas mileage (up near 40 on highway trips), however, it would get very uncomfortable on long drives, at least as I approached 30. :)
Fun to drive GAS MILEAGE Modification friendly Exterior styling
I wouldn't change anything. The low-comfort is to be expected in this type of vehicle.