I loved it but once I had to tail a live log of a Docker container with no option to install even 2-3 basic UNIX tools (like `tee` in order to append to a text log) and from that day and on I removed the 20% transparent background image.
Nowadays I have just one terminal program that is just slightly transparent and I have a nice desktop background that is fairly uniform and almost never gets in the way -- but I never use that one for my Neovim or for ssh-ing into remote machines. Only for myself fiddling around with stuff.
Transparency did look cool but once it prevents you from doing your job well once, it's out the door.