I'm working on a rather complex situation and was wondering if anyone happens to be on Microsoft's payroll or is a UAG/DA ninja

Essentially assessing the feasibility of expanding an existing UAG/DA 2010 (on Wink28r2) single-site array (2 member NLB'd) into a multi-site UAG (on Win2k8r2) & DA (on Win2k12r2) configuration. There's a few wrenches in the spokes:
- No global server load balancer
- DA Clients are mixed Win7/Win8/Win8.1 (mostly 7 though)
- UAG trunks will be resultant of PFO (planned failover) + IP injection via Hyper-V
This is essentially a two-site setup (HQ and DR) with separate /16 spaces and DC's at each site (multiple forests/domains auth'ing via ADFS). Again, this will be a failover situation so the UAG/DA services will be switched places, essentially. I know this makes things weird with the DA entry points + GPO configuration...
I anticipate the VIP DNS (externally resolvable) will be HQ+DR format, i.e. webapp1-dr.domain.com...DNS is another big thing in this whole project. IP addressing from all perspectives isn't a big deal, rather the technologies required are. Anyways, just seeing if anyone on TE has done tricky things with UAG/DA. I haven't seen it come up much so I'm not expecting anything, just thought I'd throw it out there.