from what i understand.. its because when sprinting the autojump is rather useful... not so much just walkin around ur base. So... i see where the idea is coming from but its just not possible.Besides the fact that it's impossible, I don't really understand why?...
im not a plugin expert or whatever but i do know that the 1.10 autojump is client side not server side so unless Mojang makes that a feature im not entirely sure how possible it is.