If you would like to switch to are more capable framework it would be much easier to add some collaborative features. I recommend strongly looking at the Python Pyramid framework or at Flask (or at Django, if you want more "rails that lead you") as soon as possible, so this could grow into something really powerful. Many java frameworks also have everything you will need.
Unfortunately there are still many frameworks used nowadays, that are missing very important things around groups, ACLs / RBAC and collaboration. I do not know why, but especially in the PHP world these things seem to be looked at as some "advanced science", with a few exceptions.
Not integrating these features from the very beginning into your product will determine the long term direction of your project without you even knowing about it. This is the dangerous result of using popular, but very limited and limiting frameworks that do not support your growth.
An experienced developer will of course identify these weak points of a framework immediately, unfortunately many people still waste a lot of time with these misleading trap-frameworks, just because they are cool today.
It is important to spot at the weaknesses of these half-assed "frameworks" and clearly tag them as dangerous for serious project work. Laravel is ok for a quick and dirty prototype that helps you to model your ideas, like a brainstorming session, but should not be used for a real project. And this modelling phase should be very short, quickly moving on to the more involved engineering process that takes all aspects of a modern web app into consideration.
Hopefully it is not too late for your project to switch - it will be a very good investment of time, I promise!