Scape Scape:
Hercs don't use the same runways the C-17 does. Thus, you can do more with less because you don't need a runway as long or as solid.
You can still only fly one on a Herc, flying a Boxer one at a time in is not a efficent means of deployment.
Scape Scape:
Support fire is never meant to be a substitute for direct fire but an APC is not meant to be a MBT either and it's a hell of an improvement over the proposed [url=http://www.cbc.ca/news/background/cdnmilitary/equipment.html]Mobile Gun System.
Indirect fire is a substitute, its for when direct fire is ineffective. The MGS was a failed experiment, it was an attempted at saving money. The CF wanted firepower with mobility, and they thought they could save money if they used the LAV chassis. Ultimately a 25mm is a shit ton more effective then small arms fire. The only advantage of having the RWS is that there is more room. Now special engineer units need this extra room for kit, but the majority of sections do just fine with less room since they dont have the requirement.
Scape Scape:
Last, the LAV is still a good piece of kit but there will always be room for design improvements. A 10 ton will carry far more then a LAV can but you won't see 10 tons outside the wire either. Right tool for the right job.
HLVWs (10 Ton Trucks) do go outside the wire, they are what supply the FOBs and Legers.
I still dont think the Boxer is that much of an improvement, it may be better then the LAV III but I just dont see it. The only major advantage is the range it has.