That's not really the relevant bit. Where you can be was never an issue my players had problems with. Again - the issue was that actually doing the job of a decker put them in a completely different simsense world, such that they couldn't do the job of hacking the system and still not get shot in the head. Much like mages in astral space, their bodies needed to be guarded. If that's still true, I'd still prefer to leave them back somewhere safe, and let the meatjobs get the physical work done.
Hackers in 4E (or deckers in 5E) do not have to go hot seat to hack something. When they do they perform best but they can also hack things without giving up control of their body. To compare it with mages, its like they are just astrally perceiving instead of projecting.
Another big change in 5E are limits. Your attributes and gear determine how many successes you can have. This was done to make attributes more valuable compared to skills and other dice pool bonuses and gear more diverse.