As someone who has made the switch for an year or so:

• Legacy apps with xwayland do not scale properly and appear blurry and pixelated on my multi-monitor setup. This sucks because there are a lot of old apps that aren’t ported.
• No great onscreen keyboard that works well.
• Problems with Java apps like webstorm and pycharm where they won’t scale properly and are unusuable.
• Even my IDE (code) and other electron based apps glitch sometimes.

I like Wayland so far but these have been really bothersome.