Most of the stuff, as has been repeated thousands of times, I'm sure, is not 100% definite. 1.2 has not been released yet and most of the code running on tjw's server has not been committed to svn. If there are valid reasons, there will be changes... you just have to come up with them.
If you really want to keep playing 1.1, keep your backported binaries and qvms around. You'll still be able to play 1.1 after 1.2 is released, and even have your servers listed on the master server (1.1 clients won't see 1.2 servers and 1.2 clients won't see 1.1 servers).
I will continue to maintain a reasonably updated game.qvm for 1.1 until 1.2 comes out, as some other people will (though, some of those 1.1 compatible qvms are not so much 1.1 as random stuff that happens to be compatible). And the code is available under the GPL, so you can continue to add bug fixes or fork off and do your own thing.
But don't expect extra bloat for a "classic" setting.