This question may soon become moot for me.
I was talking with our systems administrator who inherited the responsibility of blessing Mac OS versions for our network and I noticed the iMac on his desk was running El Capitan. We talked about it and he said that it wasn't used for production, so it was fine on the network. He also said that while they were always careful there had never been a network issue that disqualified any version of Mac OS X. (Not so with Unix/Linnux or windows).
So now it's up to me. I can install El Capitan, test all of my systems, he'll run quick diagnostic and then, assuming no issues with the software I use, I'll be able to upgrade all of the macs I administrate (about a dozen). As for the other macs, since I don't edit scripts in SD on them, I won't worry about ASObjc on them.
I'll also be able to keep my home system and work system in sync. (I'll still have a Yosemite partition on both if I need to revert or test there).