The cap-badge thing is, frankly, a red-herring. We are witnessing the evolution of a generation of soldiers who, if used to working together, will do so without particular regard to cap-badge. Again, to take the Royal Regina Rifles and North Saskatchewan Regiment as an example, young soldiers from both those units were quite blunt that they work and play together so much that they don't really distinguish one unit from the other. The Camerons and Royal Winnipeg Rifles are in much the same situation. For that matter, all five of the 38 CBG units work together enough that they have developed a significant cohesion.
I've been in the Reserves for 31 years and am extremely proud of my Regiment. However, I've come to realize that these young soldiers really are pointing the way forward. You go on exercise with someone, share a trench with someone, go on patrol, get wet and cold, drink too much, etc. etc. with someone, and you develop a cohesive bond that transcends cap-badges. We see this on operations all the time; I commanded Roto 0 of Ops Bronze and Boreas in BiH and had essentially 100 odds and sods wearing about 40 different cap badges and, you know what? Within a month, it was an integrated team working for a common purpose. This isn't to say that Regimental identity isn't important, but frankly, I think our TROOPS are capable of attaching exactly the appropriate amount of weight to it, in what amounts to an instinctual way.
Are tactical groupings a permanent solution? Maybe they are, and maybe not. Perhaps the more important question is, do they achieve the end-state of an improved and more efficient training experience for our soldiers? So far, it appears that they do, while allowing us to focus other energies on designing and delivering said training. The day may come when we need to take the issue of amalgamation, disbandment, or whatever, head on. In the meantime, however, tactical groupings are doing an effective job of training our soldiers more effectively.