With all due respect, it’s theoretical for you, not me. In more than 15 games with these changes (Removed RA bonus from 5men, Osttruppen timing nerfs, T1 skip nerfs) on miragefla’s mod with him and other lv17-19 players in 1s and 2s we extensively tested the Ostheer changes and found the faction to be in an excellent spot after them.
These conclusions are not absolutely perfect, but are certainly much better than theoretical predictions.
Okay fair enough on the nontheoretical bits, -but- The thing is we can test vanilla grenadiers against various factions and the result will always be the same unless grens get some sort of buff. The engagements will remain and continue to be horrid and painful. Which forces into the same 4 doctrines.