We are in the process of planning the remodeling of our 9 1/2 x 5 bathroom and are considering the expansion of our ceiling to accommodate the installation of a skylight.   With the expansion, we will lose our vent.  However, there is a window in the shower area.  Should I have the vent moved or is it okay to REmove?  How necessary is it to have the vent if there is a window available for circulation?  Hopefully the expanded ceiling will allow the steam to dissipate easier. Thoughts/Suggestions? Thanks.