I learnt, decades ago, that to the quickest and easiest way to handle packing and unpacking for a true frequent traveller is to have a completely separate set of many items duplicated just for travel.
For me, I have a separate set of bathroom items, clothes, shoes, electronics/adapters and even a separate wallet pre-filled with travel only type cards and standby cash.
That way, packing and unpacking at home takes less time than packing and unpacking at a hotel. Many items can just stay in the bag at home and are replenished/replaced during the next trip(s) as necessary.
Unpacking for me is about doing laundry and not too much more. Packing is about putting that now clean laundry back into the bag and not too much more. Ironing, except for the clothes I am wearing on the plane, is done at the hotel.