You said you want to remove the tons of Magachs, that would be an insult too Israel, you want to remove tech that have been added twice.
Which are in most nations if not all if you were a Japanese person and find that your tree is to be cut in half and bar’ed from entering rank 5 because a player doesn’t want their tech from being added twice, how would they feel ???.
We have an option to stack vehicles, so why not just stack all Magachs that barely different? We can do this with Leopards, Shermans, and others. Gaijin has done it to Centurion in GB, so we have only 2(or 3, I don’t know) different modifications. One without stab, one with, and Caenarvon
Regarding this. Purely business there are more positives than negatives to sub trees.
The tree that gets a sub tree gets help at certain BRs to make lineups and close gaps.
Being a sub tree means that all vehicles of that nation go to one place, meaning that people from that nation will be more inclined to either buy premium or spend time playing the game.
Sub trees only become problematic in more extreme cases, like a couple of mains from a certain used-to-be empire that want like 5 sub trees. Only because these mains want to have their cake and eat it too.
However even in some of these extreme cases compromises can be made.
Do you have any idea how little that narrows it down?
I’d say Britain, China and Japan come to mind mainly, but in rare cases I’ve seen this from others too. Russia could’ve easily made the list too but their empire usually isn’t the given reason, USSR / Warsaw pact is.