Wow, you seem to go way back!
Yeah, now that you mention it, it always did seem a little "quaint" the way MSLogon prefers using local groups first (though that does make it fit well with home LAN users). Honestly I didn't know it lacked Kerberos support; I'm surprised. But MSLogon's not a feature I use ordinarily.
In short then, yes, I would agree an update would be valuable.