There is little or no risk, tiddlers are stored exactly the same with the default editor and codemirror, however for you need you may get a lot from the new codemirror 6 especially with wiki text highlights.
- I support the idea of you using one of the plugins for citing content, then you tap into “tiddlywiki smarts”
- There may be possibilities of adding to the parser, the highlighter etc but I suggest first investigating existing solutions.
The sky is the limit in TiddlyWiki @jonnie45