Riiiight. I don't want to spend hours tweaking my desktop. It's hard enough to pick a decent wallpaper, and since I've been using X desktops since the SunOS era, believe me when I tell you that I have no interest in wrestling with multiple X toolkits to achieve the kiddie look of the day...

My experience tweaking my Linux desktop didn't take nearly that long. It depends I suppose on how in detail you want to get, but a much nicer look than the standard is fairly easy to achieve.

Minor tweaking?

/r/unixporn crowd is always interested in posts that customize their Linux setups to the max: use Window Managers almost exclusively, have a unified color scheme all over the system etc. That's not minor tweaking.

I did one that took me probably 30 minutes and it looked nice in Manjaro. Those are just nice Environments, don't have to go all the way.

There are plenty of posts for DE's and I think there's filters in the sidebar for whatever you might be looking for.