I applaud this effort and think it is amazing graphically for a tty, but serious question: does anyone use this as their daily driver?

I'm the creator of Tattoy, so thanks. A significant part of the motivation for the project is that it's fun, like a "toy", as the name suggests. I do use it everyday, but only for one serious usecase, to allow my Twitch chatters to visually interact with my terminal by sending emotes to it. I'm not personally into the animated cursors, they were just easy to implement because I'd already built out support for Ghostty's background shaders.

But, if you want a truly serious usecase, then my pipe dream is that Tattoy becomes the "XWayland" for an entirely new protocol for terminals that explores moving on from ANSI codes, the terminfo database and so on. I wrote a blog post about this idea: https://tattoy.sh/news/an-end-to-terminal-ansi-codes

As in the cursor trailing to new position? I use it, albeit on a different emulator.

Greatly helps when demoing something from my terminal and having multiple splits open.