The hi and lo is that Gaijin balances off statistics, not opinions, which is why there are plenty of unbalanced vehicles in game, but the majority of vehicles are reasonably well balanced.
This gets brought up so much, and is a completely pointless argument to make. What would you like them to do, remove any weakspots from the vehicle? Should they do that to every vehicle in the game so noone can kill anyone else? Your tank has weakspots, just as every other tank does, you have more than enough to make up for it, and you have to learn to play around it, like you have done for every vehicle up to that point in the tree.
Because they are performing just fine where they are, without 833, and adding it to them would upset that balance. The M1 is probably the best 10.3 vehicle in the game, it is incredibly powerful and capable in every situation you will find yourself in.
Such as? The 2A4 is a very stong vehicle, and really shouldnt be seeing the current 9.3’s, but this is a compression issue. The T-72’s have a plethora of issues that restict their performance in a lot of common situations, same with the T-80B, the 10.3 Ariete is a fine vehicle, but does everything worse than the M1 but has a better gun and round, which as i’ve already said, is just not needed at the BR, the Challenger 1’s are good vehicles as well, but again do basically everything worse than the M1 apart from again the gun and round, but do have semi-decent turret armour, which means that you have to aim for the weakspots you should be aiming for anyway, and France and Israel dont have 10.3’s. For 11.0’s, there isnt one for germany, the T-80U still suffers from the issues of all the T-series, but has a bit more armour, the Type-90 is a complete glass cannon, and does have a lot going for it, but does take some map knowledge to play and the Merkava 3’s are not anywhere close to the rest of these vehicles. The only one of these vehicles that really could go up is the Type-90, but even then, it would suffer in comparison to the rest of the 11.3’s in the hands of the average player, because it does actually take some skill to play well. The M1A1 keeps the mobility and reload, but gives a straight upgrade in terms of gun performance, which is why it is an analogue to the IPM1, you trade a tiny bit of mobility for a better gun with a slightly better round.