Sounds complex, considering before Armata a crewman could clear a jam in a few seconds.
Not complex at all... a simple electric motor pulling a cable to drag the cocking handle back and release it like on the AGS-17.
The armor protecting more than just the crew. A disabled tank is just as useless as one with dead crewmen. There's a lot of sensitive equipment and ammo in the turret the needs to avoid being damaged.
The turret will be armoured to stop cannon fire only... if the enemy wants to hit the armatas turret with tank main gun ammo then let them... the worst that could happen is that they disable the main gun... the crew would be perfectly safe and none of the ammo will be above the turret ring, so it will be safe too.
Rule one in tank armour... you can't protect everything.
Rule two in tank armour there is no such thing as invulnerable... if the enemy could hit your tank gun with a lightly armoured turret they could do it with a heavily armour turret too... no matter how heavy your armour is they could always blow off a track and immobilise the vehicle... all tanks have weaknesses. Having thin armour near the main gun does not endanger the crew and that is the number one priority.
BTW if you think that is a weakness the turret bustles on western tanks are enormous targets that are not heavily armoured and contain enormous amounts of propellent and explosive that would destroy the tank with a direct hit.
It's a trade off, if it's fine for the BMPT version, I don't see why it wouldn't be fine for the MBT version.
The original BMPT has three gunners and can use three independent gun stations effectively. The armata BMPT has independent elevation for the 23mm gatling and the 40mm grenade launcher because they require the extra elevation for lobbing HE rounds at targets behind cover...
The MBT model will be designed to carry as much main gun ammo as possible so it wont have as much room in the turret as the BMPT for other weapons.
Correct, it serves the same purpose. It would use the same mount as the BMPT version, which has no visible coaxial MG on the model. Using the modular mount we see on the BMPT, they could use a PKT, Kord, or maybe even a 30mm as the coaxial weapon on the MBT version.
Obviously I'm speculating here, based mostly on what we've seen on the recent Armata model. There may be a traditional coaxial MG on the MBT version, but honestly I see no point when the mount on the BMPT model would serve the roll perfectly.
I don't think you can speculate on the armament of the MBT based on a model of the BMPT, as each vehicle has different roles as you point out. The BMPT is optimised for engaging close in enemy infantry teams rapidly.
Is that a new tank gun? The Russian equivalent of XM360 perhaps?
I doubt it... click on the image and then zoom in and you will see it is a twin barrel weapon with a twin autoloader... I would say the gun in question is for the original Koalition and is likely 152mm in calibre and for naval use.