I honestly can't think of any competent melee dps player who would see a gap closer as a greater dps loss than walking over to a mob. The WAR/SAM complaints about resource costs were penny-wise and pound-foolish. Having a short recast on a gap closer is unbelievably powerful, because extra GCD uptime is worth its weight in gold. It's hilarious seeing the split in WAR players now that they've changed it, when you look at who's thrilled with the change and who isn't. The difference in opinion really does reflect in player performance.

I would personally take a fixed distance gap closer with no target (i.e. Roll/Chi Torpedo, Blink) over anything else, though. They're so versatile and eyeballing the travel distance becomes second nature once you spend enough time using them. They're also just plain fun. It's a bit like giving someone a grappling hook or a jet pack in an open world game. The most entertaining movement action I've seen so far is Lost Impetus with the dash + super sprint effect.