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Several OKW call in infantry were actually used quite a lot, pre OKW rework, mostly due to scaling.
-Falls were niche but the epitome of glasscannon (merit on them for been able to rival Obers)
-JLI was favoured by certain top players in some metas
-PF were basically 7man Conscripts with SVT for OKW
SP has been the only one who was always in a weird spot as it mostly cause issue by been strong as an opening unit but seeing later diminishing results.
OKW rework basically threw everything out of the windows by reducing scaling and every single one of them saw rework later on.
When you consider "main line power creep" is because you are missing the whole forest behind it.
Cons late game were always bad (except whenever PPSH was OP) because everything else would pick up the slack. You can have "BAD" conscripts because everything else in the game will wipe. Remove everything that wipes and now you have "bad conscripts". Also free/5 muni oorah, cheaper molos, indestructible sandbag spam and flares.
Grens could be "glascannons" because they were facing SU only. Bring USF and UKF into the mix and you have issues. Specially after you remove the equivalent cheese they had when facing SU initially.
Saying Rifles were buffed because they got a slight DPS increase at close range while they also lost something as powerful as smoke on main line infantry (which also debuffed vehicles). As well as Officers no longer starting with BAR and Zook (for all that it matters, they remain to be another Rifle squad).
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The issue is not remembering history, it's trying to apply the same design when the context and variables are completely different. More so if you only focus on a single aspect of it, ignoring the rest.
What is important of history is knowing WHY a change was apply, WHAT it accomplish and WHY it did so.
A somehow agile system is ideal, because that means you can apply smaller changes and correct them if necessary. Getting 1/2 patches a year means that you have to be extremely careful on what you release and the scope has to be smaller in order to not completely destroy the game for a long period of time.
PD: people who complain about minesweeper don't know that you are not supposed to win every game. On most cases it ends up been RNG.