Firstly, I disagree with the custom enchants as speed 2 will make it easier for players to run away (having pots will make it harder for people to run away). Secondly, I disagree with the gapple cool down, as having no gapples whilst fighting in almost vanilla armour, will get you quick dropped as soon as your gapple runs out (so no actual pvp). Lastly, I disagree with /fix hand command as it being infinite will be too op as you can just repeatedly switch gear and fix it. Traditionally, factions pvp is with gapples and it's where you have to break gear to kill them. However, I know from experience that you can still easily die from forgetting to gapple so quick dropping will still happen. Also, maybe a pvp arena could be implemented so players can have fair 1v1's without them running. Everything else I agree with in your suggestion.
