Nice!
... Trying to think of something that might make it more... Canadian, other than colour scheme. Australian modifications always seem to include some sort of Esky/Cooler. Best I have so far is perhaps Snow chains for a Winter setting and some tinkerings with the Autoloader, which appears to be the biggest flaw of the vehicle. Maybe the Canadians did a "get out of the way... this is how you do it!"
If anybody has an idea.. throw them in the mix. Who knows, might use them.
Yeah, DND was very keen on the MGS ... at first. The first let-down was the realisation that a big gun didn't make it a
Leo replacement. But there was also a question of bailiwick (ie: should the MGS belong to the 'Herbies' or the 'Zipper Heads'?).
Part of your 'Canadianisation' process will depend upon where and when you are positioning your MGS. DND's biggest RW push for the MGS all came before TF Kandahar. Had the procurement gone through, you could use the RW LAV LORIT upgrades as your guide.
So, ISAF markings; slat armour cage; larger hull stowage bins; colour-coded Canadian Tire plastic jerry cans; light sticks in used water bottle on the antennae, etc. For crew comfort, chuck on some blue mats; bottled water cartons; Coleman cooler (alas, we don't call 'em an Esky); etc.
Maybe
Gingie could chime in on available sources of 1/35 versions of the above?
For a more radical Canadianisation, consider a medium-caliber fire support vehicle. One possibility would be to go full
Begleitpanzer with a Bofors 57 autocannon (akin to the
Halifax class FFHs' gun) in an unmanned turret (and keep the M1128's Low-Profile Turret for another project).