OK, no secret that I don't like the ENY balance thingie, but I am really trying see practical ways to use a that model. So, after putting my noggin on it, how about this (and please forgive me if it has already been suggested)
We keep the ENY scheme, but instead of locking out the plane(s) completely, it starts reducing the number available that can be flown at any one time.
For instance:
200 players on. 50 Knights, 50 Rooks and 100 Bishops. At this point some of the low ENY airplanes start getting limited for the Bishops. The Rooks and Knights are under no restriction because they have equally low numbers on. You might say that when the limitation balance thingie when into effect, only 10 to 20 percent of a sides total number would be allowed to fly those planes. In this example (with 10% limiter), only 10 P-51Ds or 10 LA-7s would be available to fly by the Bishops during the time of the imbalance.
The percentage available could be a fixed number (like 15% of the sides total numbers) or a decreasing variable percentage as their numbers advantage inceased. You could set the side with the most players limited to 10% of numbers on able to fly low ENY planes, the next side maybe 20% and the side with the lowest numbers would be unlimited.
Hope I am making sense.
I know the numbers in the arena change constantly and maybe it would be too difficult to code (don't think so, since it is just math). However, it would still allow plane types to be available for all sides AND provide a balancing mechanism. This model could also be applied to all aircraft and not just the 49 ENY or less group (if the numbers imbalance was server enough). If people wanted to fly a specific plane and there were not enough of them available for a specific country, then they could switch, but at the same time, they might be able to use part of those number of available aircraft and a sustitute for the others.
Well? Thoughts, suggestions, comments, problems?