People will spy, second accounts will always be around Aces high, if someone wants all they need is two shades and you will never find them out - HTC benefits so he won't care.
I switch countries if not daily, then weekly depending on the fights available, however many times I switch countries to join in on a fight only to see it fizz out and nothing else happens for hours.
Let people switch countries, its not like the shades/spies will care - they have always existed and I doubt anyone with a shade is going to care whether the timer is 12 hours, 6 hours or 3 hours, its just more money in HTC's pocket.
I had a shade once, I got my nephew an account and tried to teach him to fly, ultimately that month went on to bust bish NOE's back in early 2000s, however it was rather hard to scream "SCRAMBLE" when there was no dar-bar around said base, that and nobody would up in time anyhow to bust said mission.
I see no point in a shade other then for killing, as the map tells you all you need to know, even if you had one whats the point if only a select few will scramble, even then you will be caught and wacked with a wiffle ball bat on the forums.
Shades now a days you will never find out who owns them, so who cares? HTC does - more money to fund the rest of us newer planes while other still need to kill shades to get perks.