keep the physics like halo reach  
keep everything but  
ADD ON with more vehicles,weapons, 
and dont just give us a forge world give us a forge PLANET the possibilities would be endless  
also  
id also like to be the different species like the grunts,elites,hunters,jackle, MAYBE a prophet and some forerunners or flood 
with the same customization with the armor as a spartan  
  
ok not sure on the forge planet but i think forge in outter space with like ships would be really cool.. make your own war use the different ships (all types both human and covenent)  
thankyou