It should be noted that in times of Port Maw, while they really didn't take unofficial rules well, there was still such thing as official rules. Now not so much - rules we have on GW site, which are closest to 'official' that we have, are not even complete, lacking even rules for some ships with models still in sale. So, well, every owner of, for instance, Flame of Asuryan, has to use unofficial rules of some sort. This might change some people's perspective.
Second of all, as other folks said: people against unofficial rules will not use them. So we don't have to take them into account when deciding precise nature of our unofficial rules - they're not for them. Here, for example, there's a strong crowd refusing evento use faq 2010. It's not on GW's site, You can't use it. Simple as that [i did love trolling them with exploiting obvious unfaqed loopholes faq 2010 resolved, though

] Folks who would consider playing BFG:R would usually accept anything that makes the game better and/or more interesting. It's done for them.
Yeah, sidebar letting using 2 hit escorts as 1 hit for 5 points less might be the best option, as long as both sides agree to it. I like them, though. They give nice middle ground between escort and 4 hit light cruisers some fleets have.