Your question might already be answered here. If not, feel free to ask!
Unfortunately no. In the future, we will be building an open source puzzlemaker replacement that aims to solve the issues surrounding Portal 2's puzzlemaker. We'll be working closely with the BEE-Mod developers to bring the best BEE-Mod features to it.
Nothing! P2:CE is a completely free, non-profit project- you just need to own Portal 2!
Yes, Portal 2 must be owned and installed in order to play P2:CE. Portal 2's content will automatically be mounted by P2:CE when the game starts.
We have a beta access application form in our Discord server. We tend to prioritize active members of our community and those with technical experience, but anyone can apply!
We're currently aiming for late 2021. Keep an eye on our Twitter for updates.
Currently P2:CE supports 64-bit Windows and Linux. In the future we may support OSX, depending on interest in the platform. See the Steam page for more detailed system requirements.
No, it's out of the scope of the project for now. We're not ruling it out entirely, but it's not likely to happen.