My only issue is blue shells. Fuck blue shells to hell! They're totally pointless and only serve as spoiled grapes. They don't help the 9th placed racer (you never see second or third place getting one) and with only ONE single item having the ability to block them, they're totally cheap.

Other than that, the game is fantastic.

I completely agree with this. MKW was 3 blueshells per race, now it's much better.

People get mad about getting mostly coins on #1, but I think that's perfectly fine.

I like the fact that the blue shell hysteria was reduced from MK Wii and the fact that there is now an item to stop it, even if rare.  The fact that you can't stockpile items is also more fair, because it was almost impossible to hit the first without a blue shell. You also don't lose items when taking a regular hit. I also like the new plant item. For me everything feels fine, except the fact that you can get a coin while being 10th and that the lightning almost does not benefit its user while being super annoying potentially.

How is 2nd place getting triple reds while last place gets a single green balanced?

Well, lower the chance that the second place can get triple reds or the Crazy Eight by 50% and everything is fine.

I'd love to see that.

You're wrong on every account here, as the Blue Shell only shows up 0-2 times a race, clearly do serve a purpose which is punishing 1st who'll otherwise be difficult to hit, can help 9th place as it can also hit other racers, 2nd and 3rd place can get it, and there are technically 4 items that save you from it. Also you say it's fine other than that yet don't mention the Coin item so I doubt you've really played the game much if at all.

Coins should be buffed so using one takes away one coin from every other player as well as giving you two coins. Other than that, I don't see any problems

Why the hell should we punish SKILL? See, that's my problem. If someone plays the game and puts in the work to be the best racer they can be, that skill should be REWARDED, not punished. Blue shells are a way for lesser skilled people to cheat their way into victories they DON'T DESERVE. Getting a blue shell is luck and nothing more. There is no skill involved in throwing a blue shell so the ONLY purpose for them being in the game is to punish people who are actually good at said game. 

Pretty much! I honestly don't know why people get mad over getting mostly coins #1! That surely didn't bother me too much!