Ummm, I can understand why you might think the tank is reasonable, but you haven't done enough research on tanks/neurohelmets/BT universe.
The tech for mechs is obscenely rare and hard to make, until 3050 when the clans invaded very few mechs were built. We're taking double digits, per year, for all mechs built in a Great House. Most mechs were hundreds of years old, repaired and rebuilt a hundred times or more. A lance of battlemechs was considered enough to hold a world, with support from the local militia's tanks, aircraft (Not aerospace, just air) and infantry. Tanks were cheap and bodies to drive 'em were cheaper.
Neurohelmets give the pilot of a battlemech a HUD, mental connection to the machine, and takes their sense of balance. Mechs work because so much of the work is going straight through the pilot's brain. They think it, it happens. Everything is appearing translucently over their view of the battlefield and they can bring up data with a thought. On top of that, they have all their displays and controls.
As for tanks...This is the driver's station of a tank:
In a tank, you don't have an innate sense of how to do things. You don't know how to drive the same way you know how to walk. Each tread moves independently and at different speeds. To turn a tank, you increase the speed of one tread, while looking through a periscope, keeping an eye on all those dials...You've got levers, buttons, peddles, switches, a whole lot of stuff to do as the driver of a tank.
Even if you could link up a battlemech cockpit (Which is designed to work with a neurohelmet and can't otherwise) with a tank, try managing the speed of both treads, while looking where your turret is pointing and hull is pointing (Through two seperate periscopes)...
Basically the way tanks are designed, you could not mod one to be a one man tank and be combat efficient. It's theoretically possible to do with a brand new design, but it still wouldn't be as good as a crewed unit.
EDIT: This has gone way OT though, so let's let this particular thread end here before the spiral continues xD
And now, back to 'I do love me some roleplay'...
Edited by RogueSpear, 14 February 2013 - 06:47 PM.