Motorized: At the start of your activation gain 4 movement points.

I actually think three MP is a good number and motorized is a great name for it, Majushi. Makes me think of Band of Brothers type scenes with infantry moving alongside tanks.... so how about this (and I’m mostly thinking thematically):

Motorized: During your activation, if you are not adjacent to any friendly figures gain 3 movement points.

The thematic idea, of course, being careful not to mow down your own guys with a tank, but once you maneuver clear you can still get going.

I feel like skirmish upgrades to underpowered deployment cards from the Core box would be a great way to sell Skirmish Starter sets.

Sorry for the threadomancy, but the AT-ST is still in a bad place so I thought I'd chime in.

Perhaps Awkward should be replaced with a different keyword (Mobile Firebase?) that adds 1 block to adjacent figures.

This allows imperial figures to use it for cover (much like modern infantry hide behind tanks), but it also makes it slightly harder for the AT-ST to attack adjacent rebels (instead of impossible).

Its thematic but still provides a nice little boost. Maybe throw in Assault on top of that and it might be worth it's points.

I was thinking about the AT-ST and the Repulsor Tank a bit, having just painted the AT-DP.

I think the AT-ST is over-costed, but one simple change can make it far more effective - give it a free surge. If Awkward is still considered too large a penalty, then you could lose the free surge for adjacent figures, but still attack them.

For the Repulsor Tank, I was thinking about the Scorpion Tank in Halo, where nearby friendly infantry would hop on board and you could transport them, and that an ability like that might give the Tank a unique niche. I also like the free MP at the start of activation idea. So something like this:

Mechanized : At the start of your activation, gain 2 MP. When you enter a space adjacent to friendly small figures you may push up to 2 such figures up to 1 space in the direction of travel of this figure.

That last part is meant to be the tank "carrying" the infantry types, but perhaps it's a bit wordy, and could be simplified to a simple 1 space push, like Onar's Rush ability.