Not sure whether it is feasible for PG HQ to implement or not, but still
There are threads in every section which are diluted with lot of spamming!
For example consider the QQAD thread opened by aarav, there are lot of posts asking personal queries like I am not able subscribe etc., Now, if a user goes through that thread after a long time, it eats up so much time to figure out the important and relevant information. Now, Is it possible to flag such posts(only by thread starter or at-least the moderators) in those threads and have an automated clean up mechanism which can be run every 15 days or even a month? We already have thank/groan mechanism? Is it possible to enhance the same to serve the above mentioned thingy?
One another thought! I am not sure how many oldies/regulars on PG visit this thread

Hence, I think it would be better if you run a survey every six months about how best we can improve the forum

May be, one can collate the suggestions received on this thread(every six months) and seek feedback from all the users(active) through surveying ! Wot say?