And congratulations, we have just invented the Canadian Airborne Regiment.
All of this is pure posturing of course, if we can't decide what the army is for. If it is for force generating combat ready medium brigades, as SSE implies, then the light battalions are of course, useless -- unless we actually want a high-readiness light force, something that we possibly don't want, as we disbanded such a force in 1995 and haven't really missed it much. Light forces are something that the army hasn't been able to wrap their heads around over the course of the ensuing 25 years, so it's a hard argument that light infantry battalions without doctrine or supporting enablers bring something to the table that a LAV battalion temporarily stripped of its armoured vehicles can't provide. Especially if we insist on a 6-12 month road to war -- this is plenty of time for a LAV company to re-role to dismounted.
The bigger gaps are not organizational, they involve equipment. Self-propelled mortars, ATGMs, air defence, artillery that is not towed behind a truck. And we won't fix our equipment problem before 2025 -- so long as we treat purchasing a pistol as having the complexity of the Manhattan Project.