My issue with this map is:
1/ It needs only one single flank area... Axis handicap, yes
2/ More pickup kits, less cool spawnable kits for allies... like... erm, zooks?!... Allies rebalanced
Also, each kit should come with reduced ammo. These people had little ammo and were in danger of running out. Their main supplies were limited ammo that were along their fall back positions and that contained finite amount of ammo (actually, highly limited amounts), there WAS at least one ammo-guy and therefore there could/ should be a pickup kit for this imo.
A limited kit used was the improvised sticky bombs. I really think it wouldn't take too much to implement these ingame.
Zooks should NOT be spawn kits, but pickup kits along the area. Sticky bombs are what the allies need to use by default, as well as a single, or at most 2 xpacks like from FH1, drop, lie in wait, use plunger
For the right-flank, there needs to be some section blocked off to make it only one right flank that is covered by the limited ammo mg position (hole in the wall) in that 2-storey building.
This map is about tactics. Hold off the enemy advance by making them bleed troops i.e attrition. The ammo box guys are key to keeping each position going since they have limited ammo.
If the team must fall back (Flag is lost), they can fall back to positions with ammo boxes that resupply them or spawn with their limited ammo, which comes to the same thing
Only when the Germans get across the bridge, does gameplay change to the theoretical.
Until then, consider SPR as a historic event and emulate it properly..
that's my thinking