So the recent patches fixed the short U.S. spawn timer, which gave them a unfair advantage in many cases. But looking back, I find that the games I played then as Germany were more intense. I would spend games mowing down mobs of attacking Americans, holding onto a single point as bullets, soldiers, and bombs came in from all directions.
With the new fix, the defenses are usually pretty trivial. A bomber used to only stop a push for a couple of seconds when the enemies would spawn nearly immediately. Now bombers are completely crushing the attacking ground force, and getting blown to bits is much more annoying when you actually have to wait to respawn. The games seem to take longer too, with the U.S. forces dragging out their tickets over a longer period of time. And I wonder how exactly the W/L ratio has changed since the spawn rate fix, but I think attacking has become much more difficult, just like attacking in Moscow has always been.
So, I would suggest that the respawn rate be reduced again. Perhaps not to 5, but to a value somewhere in between.