So far my preferred choices
-2 man crew light tank armed with the 20mm with a focus on all-terrain mobility. Mostly for jungles but if we will be able to bring it to mountains it will be epic.
-radio
-bomber aircraft
-new fighter aircraft
-new 7.62 machinegun
-huge railway gun
-depending on how good their aircraft is - AA gun that can act as AT
and for revision
-Fix the motorcycle
-Improve the current aircraft
-Make a heavy armored car based on the truck
-revise diesel trains for more resources\logistics\get diesel for future tanks
I'll like any of those.
if we want the MC18 to shoot through the propeller.
BTW I am rather sad they added 20mms but removed the central machinegun... 3 gun setup would be cool.
I am sure this aircraft is good enough but getting even better one is a step toward winning the skies.