This may be a little late, but what is the Fasolt's main means of sighting the target? I mean I can't see the usual tanker's methods working out so well and I fail to see any coaxial guns either, the shoot reload readjust and repeat method usually doesn't sound to ammunition friendly. Those chest mounted machine guns aren't centered correctly and if the machine gun hits the enemy but the shell flies through the empty space beside the enemy mech, well the time it would take the readjust would be extremely nerveracking and potentially deadly for the Fasolt's crew
This is a lot to unpack... not sure I understand all questions fully, but here goes. Primary sighting would be in the head, not along the axis of the gun barrels. Analog computers calculate and calibrate head sights w/ the guns. Crew layout is roughly similar to a tank. The hull MG would have its own gunner. Though it should be positioned on the starboard side (this was a visual concession). Fasolt could eat through ammo very quickly -which is why this is really a hit hard and run style destroyer.
To be honest, your final question confuses me on account of the way its phrased, but I would argue that all WWII armor battles are highly deadly for the crew. For WII armor crews, unless you were in heavy armor, survival rates were never great. And those that did survive, usually had several vehicles shot out from under them.
This is an old design, and could use some updating, but ultimately this is total fantasy. You can't take it too seriously. Which is ironic for me to say, because I take my history research and design process way too seriously. I can theorize and explain away all day, but ultimately believability is an issue of how much anyone feels up to it, because they either find the concept fun or not.
Mostly unhappy w/ the legs. I prefer the 'camel toe' look that was done in this chibi version: [link] Also think it would be better if the legs could crouch down more easily -good for 'mech destroyer' ambush tactics. My later designs have this, and it should be standard.
and the pointy tops of the cannon mantlets irritate me.
lots of room for improvement. As mentioned previously about the legs. and the whole rear section of the hull is kind of a mess. The hull MG should probably be more consistent w/ that of an equivalent panzer or jagdpanzer. And in fact, it should go on the right (starboard) side of the mech, as with most German tanks. I made it reversed here for composition/illustration purposes.
Note: the shoulders joints cannot rotate up or down, only a limited traverse left & right ( to save weight and cost). Gun elevation/depression is achieved at the elbow joint, near the gun's center of gravity.