I think it would be important to slightly randomise what exactly you get in the kits if there are no chests on starting islands. This would mean it would be worth fighting other players of the same kit - if they had all the same items as you, there'd be nothing to gain from killing them, and so you may find players with different kits being targeted (possibly leading to a monopoly of just one kit).Ye I thought about that middle thing :D, sounds pretty cool, might mess up wome of the kits tho but if what we get back is a cool midfight i think its worth it.
Then again, if the games were small with few players (as is the case in other servers' ranked skywars), then people having the same initial items would force people to go to mid and therefore promote a different play style for skywars, if everyone engages in a mid-fight.