The problem with this sort of thing in a real world military application is the apparent need to make big bulky pieces of stuff so that kids can nerdgasm all over the place.
If you want to do it right, you find a problem and solve it with a system such as this. You do not try and fill the roll of an already prominent vehicle (the tank)
So you look at its strengths and weaknesses. If you make a nimble mech, two legs with small feet, actively balanced, and as quick actuating as possible, you suddenly have a new roll in rapid strike operations. It's widely known that legs are far superior to any kind of tracks or wheels in terms of possibilities in types of traversable terrain. They can also navigate such wildly varied, in some cases extreme, terrain far quicker than similarly sized wheeled or tracked vehicles.
You can now very quickly travel over nearly any kind of terrain in nearly any sort of ground condition. You have a vehicle unbound by any roads.
Looking at weapons systems, holy forget you don't need loving ridiculous dual gatling guns or loving 120mm artillery cannons. Missiles are even a no-no.
Revert to the basics. And then entrepreneur that stuff. A large caliber rifle is all that is needed, not mounted on some stupid arm, but a full motion tripod or dual rotor assembly. Along with that you shove a computer assisted system in to keep the gun perfectly aimed independent of vehicle motion. You now have a high caliber, long range, sub artillery weapons system with kilometer effective range and a ridiculous amount of accuracy. More than enough to deal with loving anything that doesn't have 4 inches of armour plating.
it's loving science.
rant over. satisfaction not guaranteed
sci-fi mechs are loving stupid.
