Sometimes it depends what you think the usual suspects are, I look at threads since the mass lock and only one thread has been locked since then, For a few, that person maybe a usual suspect for many I suspect not but the end state was the same.
For the majority of the forum, a light delft touch works most of the time, but to assume the off topic section is the only place that blow ups happen is foolish, I can within my time remember many a big blow ups in the chat section and on many occasions, paint wars any one?, buying parts from another member and that member goes missing and campaigns are started against them only to find they have been very ill? The many times where people knowing members sales were not a place to be nasty in and yet sometimes you do wonder why nothing is said.
My point here is that once you get off your high horses, big blow ups happen in many parts of the forum. The off topic section however will see lively discussion because that is where lively discussion is supposed to be confined too. Even when you have a lively off topic section, some complain we have a lively off topic section
I do feel I need to touch on personal involvement. There are many threads I personally do not go into, some because I have no interest in, some because I may not like the main poster and some because I know it may take me beyond my normal ability to take part in a thread and not enjoy it. Some it seems lack that clarity but then go into a thread just to get wound up and lash out and blame others. There needs to be by some, thinking more honestly to themselves, is that a thread I want to go into?
As to the moddingI have privately pm'd so will generalise. Personally I'm disappointed the poll on the off topic section was locked as I feel it would have given us some answers.
Generally when you have a part of any forum that is lively need you need a mod that is a regular attender, you should also run that part with a gentle reminder you are there. See saw modding rarely works, in that absent for large periods then coming in all guns blazing and locking multiple threads often leaves behind great resentment.
A more noticeable successful working way tends to be popping in and saying, gents calm it down a bit or it will get locked, locking threads for 24 hours for a cool down to enforce the point, you get my drift and that is where the poll on the off topic would have helped to know what next. Some parts of every forum will always need more attention than others, it is the way for most of the forums we all use, and for those parts it works better when you have a mod who matches those needs
Is the off topic section lively? yes, do some people offer a lot to that section of the forum? yes, is it exclusive to those people only? no, should some people avoid them parts? Obviously