Hello, Kanth. I'm sorry the design isn't what you would pick. I hope that you still fly in it, but I understand if it isn't what you want and so you forgo it.
The main goal of scenarios is to have a battle where, when you play in it, the type of action you experience is similar to what you'd read about in the history of the battle, but with concessions made for balance and playability.
There are some things that don't further that goal in scenarios. Groups with 1-2 people in them; setups where historically a particular plane type made up 1% or less of the planes present but in the scenario ends up being 10-50x as prevalent; non-historical missions -- all of those things work against the above goal.
Other events have different goals. If the goal is maximum number of people playing, FSO's nail that. If the goal is maximum flexibilty for a CO, "This Day in WWII" does that -- you can have one side all in Spit 14's if you want, any fighter pilot being able to bomb or not, etc. If the goal were favorite planes and favorite style of action, a furball-island-type event with Tempests, F4U-4's, Yak-7's, etc. would be most popular.
This particular scenario is about the air battles in the Battle of the Bulge. Ground attack was intrinsic to that. Just like Coral Sea was all about sinking carriers, and so a Coral Sea scenario does emphasize sinking carriers, here ground attack is an important aspect. With regard to scoring complexity, it is among the simplest scoring of all scenarios going back to 2004.
If the player base were what it was in 2009, then we'd have 100 players on a side, and we could go for a larger number of different aircraft. But we have to design for the size we think we will get.