I don't think we will get level 5 anytime soon. In 5e level 5 is a huge jump in power for all classes, and I think the whole point of EA is to iron out things and collect data/feedback on early level play. Similar to what they did with DOS
Yep. Level 5 literally doubles the power of the party as many classes now get multiple attacks. I dont think this game is ready for it, yet.