GitHub and ACLs

Hey guys;

I've been talking with Scott Chacon at GitHub about the ACL system  
needed before PHP could consider jumping onboard.  He's hacked up a  
proof of concept that he's going to start working with.  The code is  
online at:
	http://github.com/schacon/githooks/blob/88b25d960050a90c3143d13d72faea72fab6b907/update

There's a couple of other things that that code does, but he's going  
to see if he can get the ACL portion of the code on GitHub within the  
next week.  The ACL format is based off of the php-src karma system,  
so our existing system would put directly over to GitHub's new  
directory ACL system.

As I've understood the discussion thus far, the biggest draw-back to  
GitHub has been it's lack of an ACL system.  Is that a fair  
assessment?  If that is the case and GitHub does get the ACL system  
online, are there any other issues that need to be addressed?

-T