I think stoves was a great place to start. I've found that most people make the biggest savings in 3 places: Pack (can't do anything about that until other gear questions are settled), Tent (especially if you can go from 2-person to solo size), and kitchen. A change in cooking style can facilitate a change in stove (from Whisperlite to Fancy Feast can), which will also drive simplification of cooking utensils. (The change from stainless steel to titanium is a dollars-and-sense issue - and that's not a typo on "sense.")