Not a DE but AwesomeWM. I like its default aesthetic and it's highly extensible using Lua which gives a lot of power to the user.
Announcing OpenLemmyStats.org: Publicly Queryable Vote History + Other Hidden Data for Any Lemmy User!
But I agree that who upvoted a post shouldn't be federated. This also surprised me. I wonder is it necessary for technical reasons to prevent repeated upvoting of a submission by the same user?
Doesn't your browser warn you before closing a tab where you have entered text in an input field?