For me, I'm just a tad disappointed that Retro wasn't making a totally different game, preferably a new IP. Didn't help that TF didn't exactly look like it was pushing the hardware to heights Retro was known for.
I highly blame the Armature split, they lost their top people in 2008 after I believe that they were tired of their original ideas being turned down.
I mean they lost the director, the art director, and the lead engineer, that's like a complete small team as it were. Those are positions that can turn the tides of a company. Prime 3 looks incredible, and I'll be honest, I was never impressed with DKCR's visuals, or even art style.
I wish we could've seen what the pre-Armature Retro would've made DK into, I feel it would've been a darker 3D DK game, it feels like the group had SOLID ambition, DKCR did feel too safe, in terms of it not being a reinvention of the IP as Metroid Prime was, and I high sympathize with people who feel that way, because I see it as well.
Wii U with its far greater power and capabilities, made imaginations run wild with what Retro could do and see what they could create on it, and it turned out to be DKCR 2, which all it's really doing differently at least in highlights are the "3D" camera and the underwater levels, which would've been more than possible in the original (Retro even just confirmed the former was planned in DKCR).
Retro need to show that fiery ambition that made them into the status they are in today, prove they don't need the leads that formed Armature. Whether it's taking DK in a bold new direction, or another franchise entirely, preferably one that hasn't had an entry in like a decade (Star Fox is ripe for the picking), that's just my thought on the matter.