What are good strategies involving Remodel?
Be Ruthless!

This is basically an extension of the strategy of trashing all your lame cards presented here. Don't limit yourself to only remodeling Coppers and Remodels. Be ruthless about it: if you get a Remodel in your hand, play it, even if it means passing up other actions, and even if it means you won't get to buy anything. This will keep your deck small and powerful. And, as Powerlord pointed out, this applies to Expand as well, and I'd throw Upgrade into the same box. If Workshop happens to be around, it can speed up the process.