I'm always willing to listen to new ideas, but I'm not interested in ideas that will have the net effect of putting everyone in 1 arena. I.E. (make 2 arenas of 850 each and let the players choose).
There is only 1 issue that I do not like about the split arenas that I did not anticipate when we implemented them. That is how the 2 arenas with free choice of entry causes country imbalance. As and example, in one arena the rooks will have 20 more then the other countries, and in the 2nd arena they will have 20 less.
Not just the rooks, but happens to all countries on different nights.
HiTech
It's so simple, it can't be a new idea, but here it is anyway.
You already have an ENY system in place that limits flight of certain aircraft based on numbers imbalances. This same system can be used to limit country and/or arena choice.
These would be the new "rules":
1) No one in any arena can switch to an ENY-limited country via the O'club. Changing from the ENY limited country to a non-limited country, or between two non-limited countries, would be OK.
2) If my last sortie when logging in was as country X, and I attempt to enter an arena where X is already ENY-limited, a pop-up would inform me country X is closed. I can either choose country Y, choose country Z, or go to another arena and remain with country X.
Obviously this is more heavy-handed than the simple ENY system we have, but if the players are not rebalancing themselves when ENY is a limitation, then stronger measures are clearly needed. This wouldn't force anyone to fly for a different country (which would not go over well for a multitude or reasons), but would assist in both keeping ENY restrictions low less frequent and balance out the populations between multiple arenas. If it works well enough, tweaking of when ENY kicks in could bring numbers even more in line down the road.
The only "problem" in regard to country choice would occur if country X was ENY limited in both LWAs, but I don't think I've ever witnessed that occur . . .usually is it X with massive ENY (due to massive numbers advantage) in one arena and both countries Y and Z ENY limited in the other arena with very few in country X to oppose them.