Skills and equipment make a pretty big difference on the T-54, so if I may offer a few tips (I’d like to think I know the tank well, with over 250 battles in beta and over 200 in release)?
Skills:
Commander MUST have Sixth Sense. When that light bulb goes off, you move immediately to cover or just move (vs artillery, randomly, chaotically). That skill is the most powerful of all which exist in the game, and has saved my ass countless times. It is also invaluable because it tells you when you have not been spotted. I have it on every, single, one, of my tanks, it is that good.
Then there’s camouflage. The T-54 has ridiculously good camouflage, the best of all tier 9 medium tanks, so you should have full or close to full camouflage skill on every crew member.
Next there’s repair. You need to have repair on everyone as well (aside from the commander). This will allow your T-54, which already has fast track repair times, to do it amazingly quickly. While the tracks repair quickly, if your turret ever locks up, on this tank it takes ages to get back its rotation. If that happens during a brawl, without repair you will die without ever getting your turret moving again. Repair is also very important because you do not want to use repair kits on a track (outside of emergency) or the turret. My repair kits are reserved for only three possibilities: damaged gun, engine or (lesser priority) ammo rack.
Aside from Snap Shot, Safe Stowage and perhaps Smooth Ride, other skills are completely superfluous in the T-54 (and in general, really). You get these as your third skills (or second for Safe Stowage if you’re very like to take ammo rack damage).
That’s a lot of skills I mentioned, which requires a very experienced crew, does it not? The crew that goes in your tier 9 medium tank, regardless of faction, is the same one with which you’ve been grinding all along the line. By the time one reaches its end, the tank should have one secondary skill at 100% and another at over 50%, at least.
Equipment:
My T-54 has both the Vertical Stabilizer and Enhanced Gun Laying Drive - it’s the only way to get that Russian gun to aim with any kind of speed.
The third piece of equipment is Binoculars. The T-54 has the ability to sit behind a bush and light up a ton of tanks with its base 395 view range and play sniper with its ridiculously good cammo. For example, before Province was removed from tier 3+ battles, my T-54 with Binoculars could sit on one side of the ridge and light up the TDs on the other side, all the way in the back. This doesn’t just help you, but your team as well (arty, etc). On a map like Malinovka (Campinovka) your T-54 with Binoculars can sit behind the bushes on the little hill near the village (not the big windmill hill) and detect/fire on most of the enemy moving up the big windmill hill. You can place a remarkable number of shots into enemy heavies’ sides without every being detected, thanks to your inherent camouflage and camo skills.
And what else are you going to use? Coated Optics are useful, but not AS useful as Binoculars when you need to sit still and light things up from a long way away (like the example above). Up close in a brawl or medium range fight Optics are useless. And contrary to popular belief, a medium tank doesn’t move all the time - it is often employed as a sniper from a flanking position.
The Rammer is a decent option, but the gun already reloads faster than any other tier 9 medium (which somewhat compensates for its lower damage). I’ve found it to be of marginal help.
Ventilation adds 5% to crew skill, which translates to a 2% increase in tank stats - not worth it.
There’s really not a lot of equipment that can rival boosting your detection range from 395 to 493 meters (before taking into account enemy camo/cover).
One last piece of advice, which actually applies to all tanks - when playing peekaboo from behind solid cover, always make sure to wait 5-10 seconds to “drop” from enemy radar/map, before pulling out of cover again. This way they aren’t ready and waiting for you to come out.
Sixth Sense becomes doubly important when you are playing pekaboo behind a solid/soft cover combination (think the central hill on Mines). You’re going to drive outside of hard cover (still behind soft cover), wait 3 seconds for your binoculars to kick in, pick a nice juicy target, fire, and immediately pull back behind hard cover. If Sixth Sense doesn’t go off, it means you can do the same thing again right away. If it does go off, sit behind that solid cover for at least 5 seconds, until the targets you spotted drop from your map. The time to drop off radar is random at 5-10 seconds, so it’s usually safe to assume that if you stopped being able to see them, the same is true with you for them. You can repeat the process again, hitting something valuable again. If done right, this allows you to deal damage with impunity.
I realize that the T-54 is not the easiest tier 9 medium to play anymore, after it was hit by a few nerfs since beta, so hopefully this helps some (and applies to other medium tanks as well, really).