However if we do have the cash to spend, and want something
that'll really give us an edge, I suggest we build something that's
as revolutionary as below:

Two man seated in hull configuration, interchangable roles of
gunner and driver, with one commanding. Duplicated controls for
both sides. Turret completely automated and crew observe their
battlespace through sensors mounted all over the tank, optical,
thermal, infrared and so on, displated on a widescreen that
compresses a 360 degree arc of composited vision into 160 degrees
for those on the sides. This gives them a 360 degrees awareness of
the situtation and they are aware of everything, amking sneaking up
on the tank impossible.
They have a main sight, and also probe sensors that extends on a
stalk to allow them to see above cover and around corners without
exposure. Turret top weapon is remote controled and is slaved to
the crew's head movements like that of the AH-64 Apache's 30mm
bushmaster chaingun.
Main weapon is prehaps a 120-140mm ETC cannon, or conventional
version, depending on how technology progresses. Sensor Fuzed
Munitions (smart bullets) should be able to be fired with this
weapon.
Advanced powerpack should be some kind of turbine for high speed
dashes, and a less fuel guzzling one for lower speed use. Hull
profile, due to crewless turret, can be made low and squat.
Armor is entirely modular and should be able to be changed at any
time. Should provide protection at higher levels of up to maybe
even MBT rounds from the front. Active defences like ECM, smoke,
thermal decoys and such, even anti-personnel WP smoke grenade
launchers should be present for defence (or can even be used in
offence) Linkless polymer elastic tracks that are interwoven with
composite materials, making the track flexible but yet extremely
tough and mine resistant (the blast causes the flexible track to
twist and bend, but not fail and returning back to normal shape
after blast) the tracks can also be able to take several holes
without losing intergity.
Tank should also be made to be stealthy, more so then the one
mentioned above.