But...why?
I have to say at first read that this is more Twilight 2000 than Morrow Project. While the core book had missiles and heavy weapons they were restricted for the most part to the MARS 1 vehicles.
It is fun to speculate, but unfortunately a lot of MP talk seems to be more about hardware Pr0n than about what the mission would really need to succeed. More about kill tools than what the people and life in the 'pockylips landscape would be like for a team coming out of cold-sleep.
In my minds-eye things like working tanks and artillery are more the tools of Rich 5 and Krell armies, and the poor MP recon team has to use their smarts and connection with locals to succeed, not just MOARGUNZ.