Bon Jour, Coralie.
Are you having trouble with the Forum loading? I saw your post here and just went to check, and it's working well for me atm.
The feature you saw in action in Hans's post you mentioned (En savoir plus -- or Read More for the English version) is built into Mastodon; it will trigger automatically when a post is longer than a certain number of lines.
I really think that proposed feature would work well - but it is quite difficult to get the top people to accept a proposal it seems.
Let's see how it goes. Thank you for the reply - and try to copy and paste it in later, as the Forum should be working.
Already made a new Blog page -- posted and now announcing, haven't had breakfast yet but it was an interesting idea. 😄
@hansw