I'm kind of on the Fence about this. I like some older titles, but what I would like to see is a NEW GAME typically. It would be an AWESOME feature or DLC to have the old game playable in the New Engine, but to re-release a game on a new engine just seems crazy.
Ohh and it's ALL A CASH GRAB, not just remasters, but EVERY GAME RELEASE EVER. They are always looking how to suck every additional cent out of us in some way or another, it's how business works. No Profit, no reason to pursue! Free DLC will only get less common.