Bless you for saying that!
So many of the signature restaurants have lost their ambiance because of a relaxation of the dress code probably brought on by the dining plans. From different posts, it sounds like the meus have been simplified as well. That's a shame.
I don't mean to offend anyone, but the signature restaurants should be special places that involve just a little bit of an effort on the patrons' part. The excuse of "we're on vacation" just doesn't cut it. There are plenty of fun and good places to dine in WDW without dumbing down the finer restaurants.
As I said in another post, everyone certainly has a right to eat anywhere they want. However, Disney should not be expected to lower standards to allow them to do so.