So much to unpack.
There is a preliminary question. Will the army be required at some point to field an expeditionary division?
If yes, or a high likelihood of yes, then the army will have to design such a division and its theatre support organization from scratch and, in all probability have a second such division available as a sustainment and replacement force.
The 2nd preliminary set of questions are: what are the army related threats to the homeland? How will we organize to fight them? How will we sustain that force?
These all need to be answered long before we start buying equipment and organizing industry to sustain that. And I won't get into the recruiting and training stream here.
It has to. I don't think the two (or better yet three) mechanized divisions for expeditionary ops will be very large (excluding the theatre support elements, I put the 2 divisions at around 25,000 all ranks in total with half being ARes. Yes. I know. That's heresy.
Ditto
I agree with with full scale LSCO but that doesn't mean fully tracked/mechanized. Expeditionary yes but Homeand will be quite different but still LSCO - just a different LSCO.
Not if they are infantry section carriers. 6 battalions are more than enough. SEV vehicles like mortar carriers, anti-armour and AD, yes.
Enough to round out six battalions (2 brigades) at most. I see them with roles that span the Homeland and expeditionary. (and again, 50% ARes)
Absolutely. They have ASCOD to work off of as long as they avoid the Ajax issues. It wouldn't hurt to have a second manufacturer of armoured vehicles here. German or Korea might be interested in a facility if it meant long term manufacturing and maintenance. Or, heaven forbid, Canada sets up our own heavy tracked vehicle manufacturer.