I consider myself a very experienced barefoot hiker (Inca Trail and Everest Base Camp to name the 2 best known treks I have done 100% barefoot ).
I always carry something for emergencies, usually Shamma warrior as they are the lightest, thinnest, most minimal product which is very well designed and made. I had to run for help once when a fellow hiker fell and broke her ankle.
My first aid kit has glue, dressings, antiseptic wipes, tweezers and magnifying glass.
I agree with the comments about always having water and regular moisturizer particularly for cold , dry and dusty conditions such Himalayas.
I don't use or like trekking poles. I find they get in the way, trip people up, poke you in the eye if the person in front carries them like ski poles and make an annoying noise ! I hike silently to hear the sounds of nature and see more wildlife.
I can keep pace with almost anyone but prefer to go slower to enjoy the journey and reduce the risk of too stubs!