At what point do you stop continuing to employ those unable to deploy? Where is your break point? It is morally good to continue to employ those injured and unable to return to full fitness, but that depletes the %-age who are fit and deployable. When do you accept we can't keep everyone in uniform - when the only ones fit enough are on a perma-det?
We need the next level for the injured - keeping them in the Armed Forces isn't an option - the premise of cuts has been 'if you wear a uniform, you are deployable' and a 2 tier military isn't realistic. We need to do our very best for our injured, but the current option isn't sustainable.