@iNecas @Marek_Hulan So I’ve left it a month on the support/users forum section, User Survey: Supporting HA Smart Proxies, it doesn’t seem like anyone has been forthcoming with feedback, I’m not sure why 
maybe its because the subject is fairly complicated, maybe its because nobody cares
Anyway, I purpose we move ahead with this, I think it’s fair to say most are onboard with this implementation.