I think that on the vehicle department it should stick to very basic stuff, but most important "hovering" vehicles should be dominant. Tanks and other armored stuff could be used as artillery support and forward bases.
If anything, CCP needs to pay a visit to Planetside, combined with Battlefield 2142 and Mass effect for a truly interesting mix of "sci-fi" soldier weaponry and vehicle catalog. Besides, all the technology we know its proven and effective in space, most of the time is render useless in atmospheric conditions.
What i do really expect though is that CCP goes wild with the enviroments that serve as backdrop, temperate planets are the juicy targets not only for the ease of logistics and potential rewards, but barren/lava/plasma/storm planets should serve as exotic locations to impose tactical restrictions on the weaponry/vehicule available to use.
IE: in a plasma planet it would be impossible to have large scale radar sweeps, therefore enemy positions need to be confirmed visually, while storm planets allow only to fight within land-based vehicles and exo-esqueleton suits.