I take it that your lens is a regular force lens.
During Afghanistan the reserves consistently deployed double digit augmentation. In total, I believe, 4,642 reservists deployed.
The problem from the regular force's point of view is that they want reservists for full tours which usually totals almost a year long commitment by the time predeployment training etc etc is taken into consideration. Much of the reserve force that is available on that basis is already filling thousands of Class B jobs in Ottawa and around the country.
If, for example, the regular force was to set more limited objectives, such as augmenting a rotation for a three-week exercise with a rifle company to augment a battalion or several recce troops to augment a squadron or a troop of artillery to an artillery battery, especially during summer vacation periods, I would suspect that a much greater level of participation would result.
One always has to remember that the vast bulk of the reserve force are only part-timers in the sense of the Army. In reality they are full-timers at civilian jobs and in schools who dedicate their spare time to military service. The key to the issue -- and it only takes a couple of beers to see that -- is that the regular force needs to set achievable goals and create the circumstances that will facilitate achievement. It does happen but, unfortunately, is the exception rather than the rule.