Before complaints of "rehash" Bioware has been confirmed to be working on the next Mass Effect for a couple years now and have even leaked some pre-Alpha off-screen shots of it like a year ago. (below)
Would you buy? Assuming naturally from 1080p/60fps and all DLC.
I'd buy, never played a lot of the DLC and ME3 multiplayer would still be awesome imo, it's still played on PC vanilla, no mods. Also it may come with early Beta access for the next Mass Effect or if it releases before October maybe bonuses for Dragon Age: Inquisition!
ME4 teases so far: