Starting with removing 25% guild limit if people are using their own untagged personal gear. Sure keep it for those using tagged gear, no reason outside of that to restrict. If you are joining with your own personal gear it is exactly the same as if you were guildless or in another guild absolutely no difference.
Make it 25% guild limit for those using tagged gear. Let it be overridden if someone is using all their own gear.
dumb rule LOL i wont explain why, cos things are better dumb, that said, could we at least have a marker for if a tournament is maxxed on guild members, oh wait, thats smart