As Joomla 3 is locked for new features, it will go into Joomla 4 if it will be implemented. I will add labels and so on that it's clear that it's a feature request and that it's for Joomla 4.

I am sure this has been discussed before

@brianteeman Seems so: #11136 ... and this points to #7019 (comment). Is that still valid?

From my point of view it would not be a small task to integrate modules into content history, and making an own kind of history would be even bigger, so maybe the answer will stay the same as it was.

maybe not as I "think" we've broken the connection between ucm and versions now?

Hmm, then I am not up to date it seems.

Who could know more about that?

Not that I am against it ... I think it would be really useful.

I was getting confused with a proposal for tags #24551

In which case the original comments are probably still valid.

Possibly you got confused because it is the same expert for both ;-)

@Hackwar What do you think about content history for (custom html) modules (or their content)? Would that be implementable with a reasonable effort on brain cells, coffee and work time?

We could look at this in 4.1+. For 4.0 this comes to late.

Thank you for interest! I will hope.