Hey guys,
Just quickly jumping in to let you know you're not being ignored. I don't have all the answers right now, but to answer your two main questions, yes, base stats will be added to your items and existing stat numbers will be tweaked to be in line with post 1.4 new items.
We'll work on a more precise list of what will change, and share that with you, probably during this week's State of the Game.
Also, we'll be importing existing characters with the next PTS update (hopefully this Thursday), so you'll be able to directly see how your character is impacted (if you're on PC).
Yannick