Your arguments are validUnfortunately, in high-skill multiplayer the vanilla game is practically solved after people played the game competitively for the past nine years. The axiom you described is basically true. The best designs and strategies are known, and deviating from them while everyone else follows them is basically admitting defeat. The only real exception is when countries get reworked content in new DLCs. Then it takes a little bit for people to experiment and find out the best things to do with the new countries, and then the game is solved again after a few weeks or months.
This doesn't really make sense. There's no such thing as excessive soft attack. More soft attack means you win battles faster, which means you take less damage and can spend more of your time advancing past the enemy instead of fighting it. That's why pure tanks are usually better than a tank + SPG combo, they're more expensive but have both the breakthrough to sustain less damage and the attack stats to blast through just about anything. And in multiplayer, that high breakthrough actually matters when you need to protect against crits from a 3000 hard attack enemy tank division instead of a little 200 soft, 30 hard attack AI division.
When your opponent is a human in PVP and is stacking every modifier possible to give his divisions crazy high stats(that 3000 hard attack AI tank wasn't a hypothetical), the choice to abandon "blitzkrieg" as a player doctrine has already been made for you. The breakpoints for offensive stats required to push and actually break through a good player's defensive lines are so high that you have to sacrifice other stats - and speed and reliability are first on the chopping block.
This is why and how a meta for a game develops - strategies are tested in combat by humans against each other. Strategies that work are repeated, strategies that don't work are abandoned. If a strategy is found that counters a previously working strategy, a new and better strategy is found to adapt, until there aren't any more improvements to be made or counters left to be found and everyone is using the best possible strategies. HoI4 has been out for nine years, and with the exception of DLCs reworking major mechanics the fact is people just know how to play the game now.
I will still hold my views, albeit with new perspective
Thank you for your time.
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