You do understand that if criminal group duration is reduced to 2 months then Police ones should be 1 and Civilian would be some weeks? Not to judge or something but it seems like you are suggesting this only because you have recently created a group and can't wait current 'duration'. (not saying anything just it seems like that lol)
cops and civilians are doing fine, except criminals which they are not, they are the only side who are not doing fine, you probably say criminals have a lot of groups but we all know that 50%-70% of them are not active that's it.
In my opinion, 2 months is a very reasonable period to apply for a board for all kinds of groups. I totally agree with this. It's quite hard to create a group and make it last for 4 months nowadays. I know a lot of players who gave up in leading their group and simply deleted it because they couldn't make their group stable/active for 4 months. Hopefully decreasing the duration would make some groups appear.