Considering that we know there are two ways to go through a window, climb through or dive through; I'm going to assume that climbing through a broken window is going to hurt you, but maybe diving through won't?
I don't think that is the case because the whole point of the broken window system is to stop the counselor from constantly jumping in and out of the same window to avoid and troll the Jason player.
I think Laphin's idea makes a heck of a lot of sense. If you use the slow method of crawling out a window, the animation will take a while, but you will avoid hurting yourself or making noise. This would not really be useful in a chase sequence since Jason would be able to grab and kill you before you are able to make your way out of the window due to the long animation.
Then there is the quick method where you quickly climb or jump out of the window. The animation is a lot quicker which will allow you to avoid Jason, but if it is a broken window you will take damage from the glass shards. This will prevent you from constantly jumping in and out of windows.
So I find the idea of having two different window climb animations (slow and fast) to be a good one. It allows for some flexibility on the counselor's part (slow and stealthy or quick and reckless). It also prevents counselors from trolling Jason via window hopping, but also prevents Jason from trolling counselors by just breaking every window he sees.