Hello, the question is a bit provocant, I know, but
1) On Commons e.g. there is Commons:Template:TemplateBox which shows a similar table like this extension but with possible links (or wiki markup like italic or code). People like writing descriptions like they are used to (with links, wiki markup,...). Now it is a lot of work, just to write a second version of this description so that all the tags are not visible and the links too. Do we need this Sisyphus work? For Example in Commons:Template:F/doc
| 2d-en = [[#Display Name|Any text]], default is the file name (parameter #1). If there is no alternate text the parameter #2 instead can hold the first [[#option|option]]. | 2d-td-en = Any text, default is the file name (parameter #1). If there is no alternate text parameter #2 instead can hold the first "option".
2) For a good and helpful parameter description it can help a lot to state a link to another example or to a help pages with more regarding informations. This is not possible with this TemplateData Extension. (see also #How to enable wikitext within descriptions?)
PS.: I think it is the problem with the unsupported wiki markup that led to separate templateBox templates on Commons or other wikis. Normally a unified centralized solution is much better I think but when it has this important weakness, people find their own way and now on Commons the Extension:TemplateData is just collapsed (not visible first) because of the reasons above. Best Regards --W like wiki (talk) 17:20, 10 February 2024 (UTC)