If you take two reserve units with authorized strengths of 300 each and put them together for 600, that is all well and good in the short term, but the next government comes around and decides that they only need 400 and so forth. If you look at our history, the number of units has been gradually shrinking, which hasn't necessarily led to larger units. Sure we could amalgamate all of the reserve infantry units into x number of battalions, I'll use 12 because someone already said that, what happens 15 years from now when those units are the same size as current units, but we are now short thousands of people again?