Last I checked Trinity Universe and Neptunia did 'average' in the reviews. The thing I've noticed about IF/CH is they started off pretty crappy but unlike most game companies have actually learned from their mistakes and improve bit by bit with each game. Only downside to that is they improve at such a slow rate it's taken them all the way to Neptunia to produce anything playable, IMO. XD
They've been in business since 1994. Two decades of crappiness. That's more than enough time to hone the craft of game-making, yet they continue to pitch snake oil.
I don't see much reason to believe that they're interested in anything beyond superficial, band-aid fixes. The thing about IF is that they jump from one dubious niche to the next. For much of their run, they targeted gamers who got off on the notion of being super hardcore.....in short, people who were dumb enough to buy broken, poorly designed/programmed games (but were intentionally esoteric and difficult to comprehend to appeal to appeal to one's ego) for the sake of bravado.
When that market dried up and players caught on, they turned to the moe/otaku audience. Lots of crossovers and fan service to keep customers coming in. Once again, it's the same story in terms of poor product quality and superficial improvement.
If history is any indication, they'll just switch niches and employ their usual MO when moe fans stop buying.
