Few points for start...
-> Recently with d2r release we had even thousands of ppl in one sub forum and it was a matter of few seconds for a topic to be gone from the first page (showing 50 posts).
-> Regular d2 Trading Grounds is more split and having bold/red topics there makes more sense (or in any other sub forum for that matter), since they can stay on the first page way longer
-> We also have a pretty nice filters and it helps a lot, but that also proves that bold/red titles aren't that really needed for d2r trading
(-> additional point: I've seen quite often that 4 hour bump rule was not respected and even after report, such topics were not closed)
So, how about a new paid Post Option(s) to have our topic listed on the first page a little bit longer?
I cannot suggest anything specific (anything ready), but I am sure that our staff could take it from here. I think it should cost way more than 5 fg (to prevent ppl from abusing it), but that's all I can say.
Lmk!