Thanks for your feedback
. If others want this as well I will have a look if this is possible. But I have to admit the message board software is a little bit tricky to update and so I wanted to avoid more plugins (usually I don't use phpBB, so I am no expert here).
My personal opinion on this is that I prefer comments over likes. I made the experience people comment less if they can just press a button, so I am not sure if this is an improvement for a forum... I think commenting is more personal. But this is just an opinion, the real reason why I am sceptical are the technical difficulties.
We have a rating system for the gallery, so if you like a picture there it can be shown.