Making Navy a More Relevant Choice

Yup. See metal planets

I meant more along the lines of the orbital space laser, should have been more specific.

In that case, your guess is as good as mine!

Turning land into water seems a bit OP (theory crafting off course, i haven't seen a game where you could do such a thing).

Naval could dominate any world by simply digging away the land around your base = the enemys land cant get to you, they have to use naval too, or air = ground units becomes completely unrelevant.

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While naval wont be that usefull on a planet with little water, the same can be said for ground units on a water planet. You dont need to use the same unit all the time.

However: Having a ship with legs (like salem) would be fine, as long as its a special unit and not the norm (likewise having a amphibious tank would be fine too).

Populous had lots of it.

Is this topic even relevant right now?

What I mean, the water level on most of the random generated planets is just to low to justify the use of naval units and the planets are simply to small, considering the range of the large vessels.

Play on a planet which is mostly covered by water with only small islands and no pathing blocking land bridges and it should work quite fine already. Maybe even overpowered, if you consider the firepower of the large destroyers.

It's not surprising that you can't make use of naval if there are only small patches of water (which act more as path blockers than as oceans) or such strange configurations as water on the one, and land on the other hemisphere.

Point 4 of the original post is the only I agree with. At least air builders should also be able to build sea defense and intel structures.

By intel structures do you radar? Because last I check air builders could build radar stations.

Sonar, I mean sonar and torpedos so you can gain at least limited sea control without deploying a shipyard first.
And are you sure air builders are capable of building on water? I'm not sure right now.

If there is ever a body of water on a planet, I always do my best to build my base on it. I have bluebottles patrol the shoreline, and put narwhals all over the middle. With the extra space, I build tons of power generators and storage. Any units that come near that body of water don't stand a chance, because of the superior range of the naval units. If anything, it's more overpowered than land.

Didn't the devs write somewhere that they where going to toy with the idea of nukes leaving craters..?

During a long game, most defenses are going to include nuke defense. What better use for a nuke then, to sculpt the landscape so you can get better access to the back of the enemies base via water? Or even use them to destroy mountains that are in the way of your tanks....or use them to create a land chokepoint.

I also agree that ships that eat dirt is a strange idea..although a novel idea

Ships currently don't scale well for their cost against aircraft atm, but their bombardment choices are superior to even most static emplacements.