Unfortunately no, that is the problem of the trackables. They disable "normal clicking" completely.
But, maybe the "Force Key"-method could solve your problem. Link
It won't allow rightclick or unit selection, but you can turn it off and on.
I don't think so. It is based on game constants you can set in your map, you could manually recalcuate what the damage was though based on the armor formulas and types... but I think it's impractical and lame. o.o