This isn't really about what we know now, but what we thought at the time I know the offical answer is 3:btw
I think Hitech underestimates just how important being able to switch sides is for a lot of people and how it affects their enjoyment of the game. At the time it happened there was 2 schools of thought 1: and 2:, 3: was never even put forward until Hitech himself suggested it.
I think a lot of people are overestimating the number of people who want to switch when their side is dull, and perhaps underestimating the impact shortening the time has on the 'Chesspiece 4 lyfe' players. I think it's a pretty safe bet that chesspiece loyal players are the majority, based on what I've seen on the boards and in game.
It seems to me regardless of whether it's happening or not, shorter switch time means to some people that there's just GOTTA be more spying going on. Every time the enemy is in the right place at the right time, it's gotta be spies. They then carry on about it incessantly on channels, creating suspicion throughout the game.
The simple solution is to leave the switch time long, it greatly reduces the spying accusations. It's a simple solution that is moderately annoying for a minority of players. As usual, it sucks to be in the minority.
Wiley.