We often focus too much on shortcomings but not on the things that TiddlyWiki does so well that we just take for them granted.
Drag and drop.
It just works, within the same wiki, from a different wiki. From a different browser!!! Copy entire tiddlers or plugins by drag and drop.
I am working in Notion at the moment for a client project and even with the Notion desktop app installed, I cannot drag a block from one page to another. Doesn’t work in the browser either.
I have to manually cut and paste blocks and then deal with the weird formatting blocks not matching up… not having a plain text editor makes this harder than need be.