I agree with others here that most CP's are two levels below a J.W. However, many CP's can compete with Pullman or Grand Mercure, and CP's are generally better than a regular Mercure.
I agree brand consistency is an issue, but we can use that to our advantage (just stay at the ones we like).
Just because someone may not like the brand or seek it out doesn't mean it shouldn't exist. I like it that most CP's are dated, non-descript and have no cachet (except for having Crowne in the name). I like it bc it means those older hotels are less expensive than other similar hotels with a lounge.
There are a number of places where I would stay at a CP, but not the Holiday Inn nearby bc the CP will offer more amenities, be a little nicer, and is sometimes cheaper than the HI.
I agree HIX has definite brand features such as free breakfast for everyone, newer hotels, and low rates (which does make me feel smarter when I stay at one).
We can't rebrand the CP SFO to a HI, bc then we'd have to rebrand the HIX S. Airport to a Travelodge. That HIX was one of the most depressing hotels I've ever stayed at (and I've stayed at the Hampton Inn Jamaica, NY).