Is it possible for the map to determine the length of the respawn timer? And if so can it be different for each team? Can it be changed during the round if some event happens?

I believe there are settings in the info_doddetect that can allow you to change the ratio of player spawn times. Seperate for each team.

Yes, Yes and No.

Its a shame we cant change info_doddetect settings mid game, would be nice to have the first few objectives be capped, then next spawn you start as Brits in a different sector of the map, or to have it dry, then start raining/snowing depending on how many flags you have.

yea that could be cool
so when the axis 4/5 flags it rain and when allies have 4/5 flags the sun is shining :)

and british and US soldiers on the same map would be ace!