If they introduce this, then ppl will stop buying sheild and activate vacation mode to gather resources for upgrades
I believe he may have been asking something a little different.
Vacation"mode" would be: Your away and unable to logon and play for x-amount of day's maybe?
While in vacation mode you do not gain anything at all. Your RSS's could remain frozen and nothing generates either.
Hence you can't be ripped off for RSS's while cruising the Carribean on NCL cruise lines with no internet access and not have to worry about losing everything.
I actually wondered about this before I go on my upcoming NCL Cruise through Alaska.