1.Why did you make all the classes equally fast? Light is called light for a reason.
I just tested this out few times with French light infantry class and grognard class. Grognard took 13.9 seconds to run from point A to point B (two specific trees in the map), and light infantry took around 10.2 seconds. Asking few friends to join and play bit of deathmatch and none of us really noticed any major difference in infantry melee combat, and I still could definitely outrun other inf with my light inf. Say whatever you will from anecdotes, but I none of them complained about drastic (infantry) melee changes by muscle memory or how things worked in practice. Now of course if the same behaviour is
greatly different on servers - which I have not tried out yet - I would suspect there's probably problems on the server's end. Not being too tech-savvy how M&B engine works, I wonder if some of it was caused by running new client on older server or server had not patched both M&B and NW properly.
Edit: Just to add few cents, the reduction of howitzer and mortar explosion range sounds bit weird. I though the biggest problem was how you have basically modern MBT targeting computer-like accuracy than the explosion itself, so instead of sniping that tower with 30 dudes for neat kill you just have to snipe harder rather than target the general area - and maybe alter centre of the target every few shots. Unless of course long range accuracy reduction also applies for them, but that sounds bit redundant IMHO.