07OperationLilaDenied:
Indeed, you've solved the supply situation.
No, I think you don't need to dial those thresholds back - it's definitely
more challenging for these coastal guns,
but by focusing the coastal guns fire against DDs and by rushing the torpedo planes to deal with the cruisers (2 sets of torpedos = directly 1 enemy light cruiser down), under the cover of our dogfighters dealing with enemy dogfighters, it's perfectly manageable!
By the way, I like seeing two ships being exploded/scuttled at the same time by the same scuttling group... And even once for a total of 3 nearby French ships!
*******
On the land side, however, it's
still too easy...
-> By the way, it would probably be a disaster to have the Luftwaffe involved as you've planed it "just in case".
-> Nice to see some real SS units, excellent addition these mobile artillery units (of
two different kinds, just perfect!)
-> Retaining 4 harbor facilities out of the 8 present on map?
Not a problem.
With no longer the possibility to outsupply entire enemy army groups
(
), then I've had to adapt my strategy...
I've opted for this one:
1. First, let the defenders of the "City Hall" bunker (
very isolated in the middle of the map) take care of themselves ... So withdraw one regular infantry unit due west to join the other forces and the other regular infantry unit heading southeast for the same reason.
2. Also bring back the different partisans to support the operations of the regular troops (
no need for them to be massacred unnecessarily 
).
3. Defend only three sectors, concentrating the available troops around them: Arsenal & Fort St. Louis, Military Port HQ (
and using the bunkers there a bit as support), west of the other two forts (
with the bunkers there more for targets of opportunity only).
4. Adapt depending on how things go...
Results:
The enemy manages to destroy the undefended "City Hall" bunker and, later, while pushing southwards from there, to destroy and briefly capture as well the Arsenal (a Factory building - excellent variation here too, but of course much less efficient as defensive building)... and that's all. => Always kept under control 6 harbor facilities (of the total of 8; we've to hold 4 of them).
BUT at the start of the turn 15, the last enemy German or SS units have been destroyed!
(
And all harbore facilities either held or reclaimed soon after!)
*******
So, I would say
still too easy landwise - perfect otherwise!
Therefore:
What about sending some land reinforcements to Axis troops? 
By the way, it would be nice here as well to have the opinion of other players that have tested this scenario.
I suggest spawning them at turn 8 (= 1/3 of the scenario).
But
which units?
Well, let's forget about the (here) useless German AA units...
But this could be
an opportunity to involve the remaining of the 2nd SS Pz Div (together with a nice event - "Due to an unexpected resistance, the enemy is forced to send more troops in the fray!" or something):
3rd PzG Reg "Deutschland" / 2nd SS Pz Div
4th PzG Reg "Der Fuhrer" / 2nd SS Pz Div
As you've selected it, this would represent 6 regular SS infantry units (3 per regiment)... =>
'Could be 3 of them spawning from the west and the 3 last from the east!
Then we could still have the (motorized of course - otherwise much too slow)
2 Rocket Launcher Bn / 2nd SS Pz Div (as one single unit together with one SS infantry regiment?) and, let's say, the
2 Pz Tank Destroyer Bn / 2nd SS Pz Div (as another single unit together with the other SS infantry regiment?)
