The only thing I'll kinda miss is the sub for my sports team because it's a good aggregation of news and people with insight and information comment there.

...but at the same time I won't miss it because of the endless homering and doom n gloom anytime anytime happens

Yeah small nieche sub's are really what made reddit for me, I used a bot to mirror posts onto here and it slowly grows the community. I think bridging is as often the best way to transfer the masses