like what you are thinking! +rep
I have suggested simular before with my own recommendations (for fun) later. given the SRV is still chosen from purchase screen suggests there may be a possibility for future instalments! just a theory though.
anyone was interested my ideas were the Scorpion and Hornet keeping with the bug theme of naming.
-Scorpion- Heavy multi-wheeled cargo SRV with a small Railgun on top, one shot to any outcrop makes it efficient for surface material gathering but poor in open combat due to rate of fire, still very lethal to skimmers though. heavy armour, weaker shields and significantly more fuel but not as fast as the scarab. 6-8 cargo max capacity. the heavy armour will aid in endurance for long range travel. due to weight and size, the handling of the scorpion is much less than that of the scarab.
-Hornet- Lightly armoured, low-profile surface 'Speeder', well armed with 4x pulse on turret, no-1 cargo capacity, significantly faster cruise speed than scarab with a boost function at rear( yes, a rocket on wheels). being low profile is would be extremely stable at high speeds, allowing for quick and rapid deployment on hostile facilities. idea is that it can be deployed from a distance, scream towards installations and wipe out defences with ease. lighter armour than scarab but greater shields to compensate. The hornet has significantly less fuel than scarab, so long distance travel is not recommended.