You're absolutely wrong in your 40 CRB org; it does matter. PEIR knows as much about dismounted inf ops and PLF knows about mounted recce ops. PEIR knows as much about Pioneer tasks as PLF knows about mounted screen ops or flank surv.
Sure, PRes units have been changed to other functions...I remember how well that went for the Elgins initially. I had a few friends in RETS at CFSME in Gagetown, and because they (Elgins) didn't have the background knowledge and experience, they were viewed as 'dangerous'. That was a few moons ago, but that is still the initial result. There was more $ allotted to unit trg days back then, and far less 'mandatory' trg eating away at a precious Cl A trg budgets. Nowadays, who many years would it take a re-role a Inf unit to Recce, and train them to any level of actual proficiency?
But you're not talking about re-roling units, you talking about "swapping"; example - Hfx Rifles go to 'dismounted', PLF go to 'mounted'. Why? What benefit is this? I see none.
Who We Are
The Princess Louise Fusiliers (PLF) is a Primary Reserve infantry unit of the Canadian Armed Forces. Based out of Halifax, Nova Scotia, this infantry regiment traces its local roots as a Halifax unit of Militia back to June 18, 1749.
The Princess Louise Fusiliers’s main responsibility is as a Light Infantry
regiment, including a new mission task of Pioneers
The mission task for our unit is: Assault Pioneers
– A platoon of 31 members, which is trained in the employment of obstacle-building and obstacle-breaching tools to provide mobility and counter-mobility support to a manoeuvring battle group.
Who We Are
The Halifax Rifles (RCAC) is a Primary Reserve armoured reconnaissance
regiment of the Canadian Armed Forces.
The mission task for our unit is: Influence Activities
– A Squadron of up to 52 members, which is trained in the employment of population group influence techniques, including Psychological Operations and Civil-Military Cooperation, to provide behavioural and psychological effects on those populations in support of a Commander’s intent or mission.
So you'd basically take those 2 units, and "flip" them. I'm going to suggest, being that both units are in Halifax, that the folks who joined PLF wanted to do "infantry stuff" and the ones who joined Hfx Rifles wanted to do "armd recce stuff". The ones that join Inf and then go "hey that mounted stuff looks fun"...they transfer within the Bde.
But overall...re-naming units to "this or that"...what benefit? If the same amount of troops are available for Dom Ops, summer trg support, FTX and all that....what's the benefit? This just looks like window dressing to me; name changes etc that will cost money...for no added 'troops on the ground'.