Those are all opinion questions. In my opinion, for all three of those questions, the answer is 2A. It's popular because of it's reward and challenge. It's best to signal at when you're trying to get quick points. You could earn like 10K in one day from 2A (More than enough for express probs) and finally, it's my favorite desk because of all the things I said above.
Both at the same time considering they were shown at the same time.
The 508, there's more tables and space in the 508
Yeah, patch numbers were only used after the big update. I dont think they will understand that though or the fact not to put 100% confirmed stuff
AirLink, and it's ability to skip lots of, if not all, stops