I'm against rigid enforcement of any unique-org policy, for what it counts.
Let me clarify, before booking my appointment with the "Social Club"!!!
If I'm ever caught in a situation way-out from any other WATR (Or whatever primary org) members, then I like the concept of having nearby friendly people to help out.
This can, of course, be solved by having massive membership numbers; but the last group I was associated with which had a large playerbase was certainly not what it appeared - 80% of that playerbase was inactive.
Another issue I foresee, is when only people whom I *don't want* to be flying around with from the primary org are "available", or that members of the org are particularly anti-social, strongly opinionated or just plain dickheads (to put it bluntly.).
This happened with a World of Tanks group I was with recently - there were plenty of members online, but none even remotely interested in helping out or platooning with me. The few times I did join up with other members, they were quite obnoxious, rude and generally not any benefit to playing with. I was better off running solo, so I left.
The issue here is that, suppose there ARE members that I enjoy flying with. Suppose there's quite a few members, so much that I don't want to leave the primary org, but as it happens, they're not available. Being a member of several orgs potentially alleviates this issue, wherein I can fly with people who aren't dickheads.
The obvious retort is; "Join a primary org with members who are considerate and not retarded", and I hope I've found that here, but there are always exceptions. People are a varied bunch, after all.
Tl:Dnr - I'd like to make a lot of friends and not play with idiots, given the chance.