Day 1 impressions:
Feels a lot like Mario Kart 7 HD to me. Not necessarily a bad thing, as I consider Mario Kart 7 to be one of the better games in the series. I just think that this is perhaps the Mario Kart most unchanged from its predecessor.
At first I thought I was going to absolutely LOATHE having dragged items take up the item slot, but I actually warmed up to it pretty quickly, and I think it puts this game's item balance over Wii's and 7's. Also, surprisingly, I found Coin to be the most interesting new item, more or less serving as "insurance" for players farther ahead. I feel like the dynamic of the game is a bit more coin-centric than 7 due to higher-placed players often having larger coin stocks, but I guess I'll see how it plays out in the long run.
Roster unlocking was a pain, but I mean, whatever. Only character I was interested in unlocking was Rosalina but she (along with Baby Rosalina) ended up being my last unlocks, heh. Opening up the character select screen hoping for the character you want only to get another Koopaling kinda puts the imbalance of the roster into perspective (but that's just speaking as someone who doesn't care about the Koopalings, really.)
Online pretty much works as well as I could hope. No unpleasant surprises, really. Started out joining a friend's game and had some good matches and fun voice chat. Played a decent number of rounds in the GAF tournament and that was really fun too. Lots of really competitive races, definitely looking forward to playing more with you guys in the future.
I started out a bit down on the game due to essentially feeling like 7 with, what I considered at the time, a change to the item system punishing good performance. It eventually grew on me once I found a vehicle I liked and started strategizing around the new item system, and since then I found I've been enjoying it more every match. Oh, and obviously the game looks great and all that. Can't say it'll end up being my favorite Mario Kart (my Kart of choice is DS and I'm pretty certain they're not gonna be going back to that game's mechanics any time soon), but it's been a lot of fun so far.
Anyways, my Mii goes by SRT, thanks to those who played with me and I look forward to playing more~