I can agree with your issues here, I’ve submitted 3 plugins and have been waiting ~2 months since submission of the first one and ~1 month since I sent them the files. I can’t judge the speed of their email replies (yet), but I’ve heard they wheren’t too great either. This seems to unfortionately be the trend accross the board, and especially when it comes to plugins (there are instances of people waiting 4+ months to get accepted).
I’ve read they where training some more staff for the submission process, so I hope they can do something about this soon! I guess we’ll have to wait for now tho 