Too few available time signatures

Hello there, I'm sending this message to complain about the fact that there are too few time signatures available, even in the 3.2 version. Too be precise, I know that i can choose whatever time signature I want in the beggining of the session, but if I want to make a time signature change in the middle of a song it won't let me do whatever i want, only allow me to choose from 2,3,4,5,6/4 and then 3,6,9,12/8. I can not even change that through the time signature's properties when i right click on it. It's very frustrating wanting to have a 7/4 bar and instead changing the time signature over EVERY bar (3/4-4/4 changing every bar). It gets even more annoying because all these useless time signature I have to use consume space, which is much needed for the notes! This way because of all the space consumed by the signatures, no more than 3 bars fit in each system and I really really don't find it helpful to read 4 bar phrases in 3 bar systems, and also this way there's too many pages, thus too many page turns. Why not borrow the finale system where one can adjust every system's size simply by right clicking on the system itself? The adjustments of all sizes are very difficult to use in general.