[Marker block]

This is a really cool idea!

[Inertial modifier]

Do you mean the planets are set up with varying amounts of air resistance, or a part for the drone that changes the air resistance?

[Legs]

I agree. A good rule of thumb with these types of games is, when you're looking for possible parts to add without going crazy is to take something that can already be made with a few simple parts, and turn it into a single part.

[Alternatively Grid-ed Drone Editor]

What if the drone editor allowed for different frameworks of drones? Right now, we're generally limited to squarish drones: 

But what if the grid in the drone editor could be toggled between a right angles grid and a circular grid? The type of drones made could look something more like this:

 

 

If it doesn't really make sense, try this:

Go to https://www.desmos.com/calculator and switch between the two types of grids:

All of the parts would work in both grid types, but instead of automatically staying level as you drag one around (standard grid), it would automatically point toward the core (circular grid). This would open up an alternate look of drones on Nimbatus, give it something fresh in the long run.

[Little lack of logic gates (xpost)]

Yea, I agree. It is missing some neat logic gates.

[Missiles Controlled by Variables]

Yes, what STM said. The missile launcher is stationary, but the missiles get controlled by the logic mid-flight.

[Legs]

Walking has been done before:

[Missiles Controlled by Variables]

What if there was a gun which shot small missiles, but its direction is not controlled by variables? Instead, the missiles actively change their direction based on a variable at "home base" while in flight.

[Nimbatus Alpha Key Give Away!]

If I win this, Nimbatus is the ultimate best game eva!

So, obviously I'm going to win this, or else Nimbatus is not the best game eva.

So you see, Elementary.