I need a premium tank to train my German Heavies' crews and this is the lowest available.
Which tanks do you use besides the Matilda?
Heavy tank crews are difficult to train with BOT, since most people look to heavy tanks to take the charge in battles... BOT behavior would be more likely to be spotted/reported when more people looks at you for battle development.
I use TL2 mostly for $$$ farming, using T-15, Ram II, T-25, Matilda and Matilda BP, in the order of preference.
More mobile vehicles likely to get to locations to engage in battle and do damage for more $$$ per battle.
The slower Matildas are likely to survive longer in battle, also increase the chance of getting spotted/reported for BOT.
Ram II and T-25 both have 5 crew, also good for crew EXP farming, you can always re-train the same crew for heavy tank from them when specials come up.
I stopped using vehicles above tier 5 for TL since 9.0
With premium account, usually can generate $100k-$150k per hour, saving up $1M-$1.5M per day of premium using the vehicles above. I'm happy with that, as long as my account doesn't get banned.