I know it's too early to give detailed informed feedback. I just want to say that I'm really surprised that instead of a big revamp it's more a series of very minor tweaks.
I suspect the reason most of these commanders aren't used is because the combination of abilities and units simply aren't very good, especially compared to other commanders. So tweaking them isn't going to fix that fundamental problem.
By far the best example of that is this:
Anti-Building Mortar Support
We find that the ability is extremely map dependent and thus limited in use. The building-destroying aspect of the ability is often unneeded, as the ARE can perform similar duties with greater flexibility. To improve the abilities usefulness and effectiveness, the following changes have been made:
Steadily drops 8 shells over 12 seconds at the target position.
Cost decreased from 150 to 140
Damage over time frequency decreased from 3 to 1
Mortar near AOE distance from 1.5 to 0
Recharge time from 240 to 120
You acknowledge that the ability is 'extremely map dependent' and that it is basically redundant due to having the AVRE. But then you go on to give it minor tweaks, which doesn't address the map dependency issue or that the AVRE does a vastly better job.
That ability is by far one of the worst in the game. It should be
replaced by a far more useful one, rather than trying to revive a corpse with medicine.
I really hope you aren't planning to simply tweak a few exist things, and not actually make any real significant changes, or I suspect this will be a very well intended but ultimately doomed use of time and resources.
If you check this thread on the commanders revamp:
https://www.coh2.org/topic/64978/commanders-revamp-december-patch you'll see that a lot of people presumed that big changes were going to be made, and as such have suggested their own drastic changes to improve the commanders (a lot of which are very promising and changes I'd fully support compared to what we have so far).
I can't stress enough that I don't want to come across as defeatist or pessimistic, but I think it's important to stress as early as possible that if you continue like this I don't think it will be anywhere near enough to make any of these commanders worth using. Let alone good enough to be seriously considered as viable replacements for the most popular commanders.
Please, PLEASE, be more bold and visionary with future commanders. They need drastic changes, not minor tweaks.
Also, I'm hugely thankful that you're dedicating your time and resources to doing this, it's by far the best thing to happen to the game since the introduction of community patches. Which is why I want to make sure it's as worthwhile and beneficial to the game as possible.