One option that would be exceedingly awesome, that falls in the same line as the turning rate option that was recently put in, would be a unit firing range option. Even just having a "double firing range of units" could make land battles a lot more entertaining, as then there would be no hiding from your artillery barrages.
I'm not sure how feasible that would be, but it would certainly be an awesome new option.
Although right now I think the biggest issue is probably just getting compatibility with the new patch.
One thing I would like most is a cheat where if you select an infantry unit and press the cheat button.. it would increase the unit's reloading skill stats. Would be awsome to have battles with little reloading and more fireing! Rapid fire is always something fun to play with.