As it is now, mechs are great for space encounters (and mine asteroids). Only. And not as good as it can be for this... Making the mech spend fuel (Liquid Erchius Fuel is practically free and uselles in the game, you can buy with pixels for a price exceptionally low and only is hard to obtain in the first minutes in game) and separating the "energy" from the "how damage your mech is" status is crucial for earthly business. I say this after some time using the highest energy body with two Beam Drill Mech Arm to clear some space to build a base. You mine some, teleport to the ship, beam down, go to the spot (in that tiny absurd low speed grade 5 legs - like 25-35% of the energy is already down at this point), mine a bit more (the beam drill takes an absurd time to mine magmarock and can't mine background blocks, so not so much work is done), low energy start buzzing... you need to go to the surface, beam to the ship, beam down, go to the spot... and again... and again... and again... (...) At least make some machinery to "fuel/repair" the mech while is on ground. Or something to call the mech to your base. Or mech parts upgrades. Or that vault upgrade available to mech parts. Or new pieces up to 10 energy/speed. As it is now is just painful to use them on the ground - and even underwater they don't act like something heavy (some parts to work better in fluids and some adjustments is needed in this area too). The point is, don't leave as it is now - because it works not at its best only in the mini game called "space" inside the game.