I agree with a post I read earlier I think a fuel/oxygen requirement would be awesome and maybe the ability for a reactor to go critical if its overloaded or heavily damaged
it really depends on how the devs want to play it out i mean if re-entry heat is a factor then the problem becomes how do you find a object big enough to survive that long. but there is the concept of a "orbital kenetic weapon" it kinda works in SE i would like to see proportional damage to mass that would be awesome
like the subscription model, MMO's are expensive to maintain & there going to have to find that funding somewhere so id rather just pay that and not be bombarded with micro transactions at every turnor have shotty server connections