I think once before I asked if something could be done to make Closed Threads clearer. I can't remember what I suggested but I know that the reasons for not doing whatever it was I suggested made perfect sense. However, I've had another idea!
It's based on the fact that, especially when using the forum on my phone, the padlock sign is so tiny that it's invisible so several times I've found myself reading 6 or 7 posts in a thread and only discovering it's closed when I reach the bottom and try to post a response.
I believe the mods/admins can edit a thread title. Would it be possible, when closing a thread, to just add
"(Thread closed)" after the title so that it's really obvious to everyone?
Just an idea.