Emerikol
Legend
I feel like the supposed rules modules have given 5e a bit of a pass so far from a lot of people. When something someone really wants isn't in the rules, there's always, "Oh, maybe it will be in a module!" This way, 5e can be the perfect game everybody imagines in their heads... up until the day the DMG is actually released.
Is there going to be some disappointment on that day? Oh yes.
I remain skeptical that a short section in the DMG can really do justice to, for instance, robust gridded combat rules. But I guess we'll find out soon enough.
This is my gut feeling too. I suspect the grid will be good for people who want a few extra basic rules that apply to everyone. Kind of how 1e,2e,3e handled the grid. People were playing grid long before 4e. If though you want a bunch of powers that really mesh with the grid, I doubt you'll get those. I just don't see them providing what would practically be entire class rewrites in the DMG.
I do think they will have some nice campaign domain rules. They will have some healing alternatives but they'll be gritty vs heroic and not really martial vs magic-only.