So, if you can think of something fairly specific that you'd like to see fixed/improved and you estimate it to be a small(ish) task (so, not something vague and big like: "Can you fix the forum's search?", or "Can you improve the forum's mobile-friendliness?", etc.), then please post it in this thread.
The "locking of threads" where one can't reply to it and the "quote of same thread" where you can click on and it type your post but can't send the post has been a big bugging and annoying forum operation to me.
Although I'd admit it's my fault of not looking through before taking step to quote already existed replies but it really feels annoying after coming across some attractive posts to quote and after typing the words and just to notice the thread is locked which means you can't successfully send the post.
So my suggestion is that if a thread can be locked which you can't click on to type the words on replies, the quote should also be locked like not Open to type in your words since it can't be sent.