I've been using the fastest combinations since release. I really feel that along with these tracks came some balancing we weren't told about. Slicks seem much more, well, slick than they ever have before. And not just on the new tracks. I've had to change how I take my turn through the woods on Mount Wario. A track I've had down mechanically to a tittle. It's tempting me to rework my build, but in the end handling can be compensated with good driving. Speed can't.Yes, I hate it! I'm not actually the biggest fan of that track anyway. It's probably my least favourite visually, but also in terms of gameplay because of the traction. Also the Animal Crossing track during winter. I love what the Slick/Cyber Slicks look like, but those two really make me feel like I'm not in control. Mount Wario had the same problem too, but that was ice and snow so it was expected.
I still love the Animal Crossing track though. That and Wild Woods are my favourite two for this DLC pack. 200cc mode is a blast too, but it's somewhat jarring getting used to brake drifting after being so used to the game for almost a year. I'm glad a lot of people are using lightweights for 200cc though. It's a shame that heavyweights are 'better' in 50cc all the way up to Mirror because they have the best speed stats, so it's nice to see the roles essentially reversed. ;)
Would love some more characters in the future. I miss Dry Bones. :(