I have a simple solution (might be knee jerk reaction, be warned)
1. Reduce Regular Force Regiments to 2 x battalions each (lets stop pretending we can field 9 x battalions), wave a magical wand and re-allocate funds towards supplying and clothing the troops (better to have well equipped 6 battalions worth of troops!)
2. Reduce the P Res recruiting to almost nothing (oh wait, we are already doing that)
3. God forbid, GUT HQ elements at all levels
4. Seriously, seriously, seriously, if your like old and ancient and have been in forever, and have no real position (yes you dinosaurs know who you are), please get out. Your kit could be useful and the money for your wages better spent.
5. Gut the HQ elements (Mentioned twice, driving a point home)
Like I said, a few ideas to cough up some quick money and shift money around the budget
Oh, of course, Really need to fix the procurement system. I don't know how to do that, not my thing. Supply Techs should be all over it.