As a user, it does not really matter to me what's under the hood as long as I can use my favourite Cinnamon desktop. But I think the shift to the micro-server Wayland possibly has benefits for developers, I don't know, I'm not a dev. But as a user, what I would like to see are faster/less buggy drivers. I'm on a Radeon HD 4250 chip and I find that 3d desktops tend to be slow for me.
Inetresting note: I was using KDE for some time and found that the wobbly windows and 3d effects were very jerky. Then one day I enabled the Show FPS effect and found that all 3d effects are super smooth! I thought my drivers were not fast enough but what was happening was because of bugs.
But, truth is, that Cinnamon/Unity etc are also a little slow for me, Cinnamon not so much but Unity and GS a lot. So, whatever the problem is, I hope it's fixed soon.
There's Mir display server also now. I think, possibly, Mint will choose whatever is of the most practical benefit for the end user. I also hope to hear more on this issue. But neither of the new servers are ready yet, anyway.