First of all, thanks for developing a great CMS! I've been searching for this for a long time.
I have a problem/request with/for page alias in combination with pretty urls. The problem is that not two pages can have the same alias. While I perfectly understand that, it is not entirely true. The way I think it should be is: two pages in the same hierachy level can not have the same alias.
To make you understand why, let me put up this scenario:
I'm making a page for a company that owns several cinemas/theatres. Each cinema has its own programme, open hours etc. Thus, the site structure would look something like this:
../theatres/apollo/programme
../theatres/apollo/open-hours
../theatres/grand-theatre/programme
../theatres/grand-theatre/open-hours
../theatres/royal-cinema/programme
../theatres/royal-cinema/open-hours
etc.
Because of the limitations I mentioned before, CMSMS will make the structure like so:
../theatres/apollo/programme
../theatres/apollo/open-hours
../theatres/grand-theatre/programme-2
../theatres/grand-theatre/open-hours-2
../theatres/royal-cinema/programme-3
../theatres/royal-cinema/open-hours-3
etc.
Now, I'm no SEO expert, but I figure if it looks weird in the address bar, won't it look weird in google search results?
I wouldn't mind helping out developing a solution for this, but since I'm still new to CMSMS I might be entirely wrong

Let me hear your thoughts on this.
Thanks