These look like some solid changes. I'm a bit perplexed still at the nerfs to soft attack for arty and tanks, but I'll guess we'll see how it plays out with all the other changes. If there are a lot of new multipliers for soft attack I could see the need for some rebalancing.
Going forward, I really hope we see two things:
1. Another DLC (and patch) in about 4-5 months. 8 months is way too long for bugs and imbalances to fester. Country pack like DoD is fine.
2. Planes balancing. Planes utterly destroy everything right now. Kinda realistic, but being able to so easily rush to the Tier 3 (1944) variants in 1938/39 is not. On top of that, planes production is kind of boring - the top model is always worth rushing, since they pulverise the lower model in combat. Contrast that against tank production, where stopping on a certain model and keeping the production efficiency up is still a valid choice, and outdated models can still hold their own.
The solution is to introduce extra models for all plane types - an extra one in 1938 and 1942. Maybe the extra models could be tied to a DLC? Since it will be a bit of work to research and illustrate the models for all countries.