I dare to call WoT a semi-sim type of game.
Where arcade style gameplay is 'enhanced' with certain simulation style features.
In this case it is viable and often needed to use real historical tactics and manoevers to win.
There is shoot-'n-scoot, there is close combat/peek-a-boom in city encounters, angle of your tank is a factor aswell, just as distance and penetration.
The armor system of the game is also made so, that in order to take out a tank effectively, you really have to know where to aim - rather then just front,side,rear,tracks etc. And the proper use of the available terrain adds to the tactics.
It's just not the simple straightforward FPS Arcade game imho.
The fact that gives the game a huge arcade feel however, is indeed as with the Sherman M4 tanks and all other ones; the HP pools.
Someone on the WoT boards - I guess it was Merquise - had an extensive post about it.
Once you are past the "simulation" part of the game, in his words: the armor - then you have to wear down the other tank's Hitpoint pool, which in this case, makes Shermans and all other tanks unhistorically strong, able to withstand many more hits then a real life tank could.
Obviously this is done for balancing and gameplay reasons.
However, I think it would be cool to have some sort of 'hardcore' mode in game, with matchmaking tiered specially for people who have enabled it.
In this mode, tanks would not have any hitpoints, just their armor and their modules. So they can simply be taken out in 1 shot, if you hit one at the wrong place - just as in real life.
Tracks gone? too bad, you sit there for the remaining match time. - try fixing tank treads under incoming fire..
Turret shot out? too bad bro..
Ammorack explodes? - DEAD Tank!
Engine fire - better put that out ASAP!
Shell through the Driver's mailbox? - He's DEAD, Jim! - oh yeah, ummm you won't be able to drive anymore...try some first aid under fire.
And so on..
And it needs some proper maps for it aswell, historical battles, historical places.. that kind of maps..