Interesting thought exercise.
If I had to start over today, I’d probably go with slightly heavier gear that is better suited for a wide range of conditions including fringe shoulder season. .
ULA Circuit (currently my MLD Burn is my go to pack)
8X10 Silnylon tarp w/ whatever groundsheet and S2S bug netting of some sort. I have a lot of tarps and tents, but I’m comfortable enough with just a tarp.
Montbell Down Hugger #3. I have one of their older SS 30* sleeping bags and I couldn’t love it more.
Thermarest X therm or Exped equivalent. I’d not bother messing with multiple pads and just own one that covers me throughout the year.
Ursack. I won’t backpack without one unless I’m somewhere where bear canisters are absolutely required.
Whatever rechargeable steripen tickled my fancy. I’ve owned a couple and haven’t had any reliability issues with them. I can’t say the same for Sawyer filters.
Altra Lonepeaks. They’re okay. They aren’t the best shoe I’ve ever worn but they are the best for me zero drop shoe I’ve ever worn. This is highly personal though and doesn’t work for all people. I’ve tried other socks but always return to Wright
Pocket Rocket, grease pot, plastic REI spoon.
SAK classic. I occasionally carry other knives and multitools, but this is all I need and more.
Eddie Bauer 650 fill $90 down jacket. I’ve owned a few and can’t justify spending more. I can spill coffee on them without crying.
I’d round out the rest of my kit with cheap head nets etc I can find on Amazon or Walmart.