We've had time now to evaluate maps on a much grander scale, and with the larger numbers of unaffiliated players, Company play, and flag spawning taken into account, Burnsides Bridge and River Crossing begin to show their faults.
Burnsides Bridge suffers from a new meta, in which the Union hurries a flag across the bridge, hides to replenish, and then begins to maneuver throughout the fields, cutting off the Confederates and their spawn. Normally, maneuver warfare would work to repel the Union, but the current ticket situation for the CSA heavily hampers this idea. The South simply cannot compete against the North in a prolonged shootout on Burnsides.
My proposed solution: Add fordable areas alongside the bridge for the Union, while pushing the desert boundary for the Confederates to the Yanks end of the bridge. Create rifle pits on the western portion of the Confederates side of the bridge, overlooking the bridge. By adding the fordable areas of the river, you give the Union another lane of approach with cover, protecting them and allowing them to get more men over the river, faster. By pushing the desert boundary further up to the bridge and adding rifle pits, we give the Confederates an initial defensible staging area that isn't OP(as going too far over the bridge leaves you vulnerable to Yankee rifles and the ford would allow another option,) while the rifle pits give the Confederates a valuable second defensive line.
River Crossing suffers from another problem: Its simply bad for business. The Confederates have two options to cross, but both are open with little cover, the Union can camp the ends of both bridges, and a horrendous barrage of artillery does very little to dissuade the yanks, while giving them a pounding headache. The solution to River Crossing is harder to find, but I think we can start by toning down the Star Destroyer orbital strike we call the artillery barrage. Secondly, we should push the desert boundary for the Yankees back a bit, cutting off the rail bridge entirely and stopping them at the L-shaped stone wall. This gives them a defensible position, while making it much easier for the Confederates to cross. Next, we make the end of the pontoon bridge inaccessible to the Yankees. Finally, we move the capture point of Harper's Ferry further into town, placing it square in the center of the T-Junction. The Union becomes vulnerable from the pontoon side, while remaining strong on the rail. Should the pontoon fall however, the stone wall at the rail becomes increasingly dangerous for defenders.
These are just my thoughts, and as always I welcome discussion.