Add new vehicles, weapons and facilities but change it to Altis that we have all grown to love.
Stop wasting time with that shitty map, get some determined people on board to make a modded version of Asylum's version of Altis.
For example, more weapons and vehicles can improve the facilities.
Keep prison where it is but expand on it, since there will be new and improved vehicles/weapons it should be bigger and harder. Cities should be bigger, improve the cartels and outposts.
Do these things and S6 will be something special.