I'm very much for everyone having a basic jetpack from the get go with various equipment pieces enhancing it later. as well innate personal shields.
my vision is that everyone from the start has basic personal shielding (much like all ship cores now have basic shields and regen), as well as the ability to sprint in gravity and use a thruster pack when not. (i've suggested this before) both actions drain the energy meter for balancing reasons.
apart from equipment like helmets and weapons we also have a equip slot for extensions which will act like a accessory slot. this will be for various ability boosters like "Thruster Overdrive" which will increase the speed of your sprint/thrust but will deplete your energy reserves faster, "Auxiliary Battery" will increase your overall energy reserves, and 2 shield extensions "Shield Booster/Regenerator" will increase the shields capacity/regen rate respectively.
this by no means would make us into ships like
Lecic said. but giving players more range of movement and control over how we maneuver the world can go along way