Not trying to poke you in the eye, but the problem with just reducing ground time until you get a hotel means all of the onus is on you: get in early enough to have the requisite time for hotel, make the call for crew accommodations, go catch the van, check in, then enjoy the limited time before you go back to the airport. Now, how many pilots will forgo the multi-step hassle and let the company off? Add a sit pay to the formula that pays out EVERY time it hits the schedule, with no greater effort on your part, and now you have a real incentive for the company to avoid legal, but bad behavior.

Edit: Scoop or someone else can explain the type of rule that would provide the default incentives to reduce gratuitous abuse.