You haven't missed much. Best Wishes is still pretty dead on the shipping front. There's nothing as obvious as Poke, Contest, or one-sided Penguin with this series.
I think Negai, Wishful, and Sommeliershippers are all waiting from some kind of "breakthrough". Right now it's all "shippers goggles." Though maybe it's less so with Sommeliershipping, since rival ships seem to be what the writers go for with this series.