The oscar and severum clubs had very valuable infromation on there that members had taken there time to post.
I hope they're not deleted.
They certainly won't be deleted. At worst, they would remain closed, be unpinned and fall down the page but still be available for people to find info in during a search.
The biggest problem I see with the oscar club thread (or any other thread that gets that large) is that I understand that there may be useful information on there but how do you find it in 50+ pages of posts? If I'm needing answers, I'm simply going to post a new thread rather than reading 1000+ posts to try to find the answer. Most members don't use the search function anyway as evidenced by the large number of threads about the same topic and they certainly aren't going to read through that many pages to find the answer. To me, a thread that monstrous simply makes finding useful information more difficult.