If I am not mistaken Frogboy already noticed that, and mentioned other things.

Regardless, we know that what we have in there now are filler events and that there was no real attempt to balance them.  They are just there to show how the system will work sort of thing.

The dev streams talked about how there will be many more events and how right now they are for every planet when they wont be in the future.

The all in all is we know full well that whole aspect does not resemble what is intended for the final product.

As far as I can tell, 'flooded' does not currently do anything to the planet.

To be perfectly honest, I would rather not have the Arid tiles turn green when the right terraforming tech is researched. Why? Because they provide a bonus to research improvements built upon them, and if they turn green when I research the right terraforming tech I have to click through all the tiles to find these, just like with all the other tiles that have bonuses. I really wish they'd color-code all the tiles that have any kind of bonus, or put in a little symbol for the different tile types, so that I can at least tell that there's something different about the tiles rather than having the current mass of green tiles that give you no feedback on what kind of tile is actually there. Having the tile change color when the right terraforming tech is researched I could get behind, but not making it turn green.

I don't want them to all turn to a single color, though, at least not unless they all have the same kind of bonus. I want the tiles to end up color-coded (or marked by an icon indicating terrain type) based on the tile type, or rather the tile type's bonus. Having all the Soil Enhancement and Habitat Improvement tiles turn orange after I have the right tech to use them (and built any improvement necessary to make the tile useful) does nothing useful for me if I still have to click through the tiles to see which tiles have what bonuses due to the tile type. This is also true of the always usable tiles. If there is going to be a benefit to building certain improvements on certain terrain types, then the interface needs to make it easy for me to see what tiles are associated with a specific type of terrain, and the present system fails to do this. The proposal to turn the yellow arid tiles into green arid tiles when the right research comes around exacerbates the issue, because it takes the one terrain type that is actually visually distinct from the other terrain types and removes that distinction. Comparing to Galactic Civilizations II is kind of pointless, since terrain in Galactic Civilizations II didn't matter aside from whether or not you needed to build a Soil Enhancement/Habitat Improvement/Terraforming project there before you could use it.

I do agree with the sentiment behind the suggestion, namely that the game ought to indicate when you've done something that makes formerly unusable tiles usable, just not with the suggested change wherein arid tiles become visually identical to all the other tiles when they become usable. My specific opposition to turning the tile green also does not apply if they decided to remove terrain bonuses or add an icon indicating terrain type, or really did anything that allowed the player to see where the terrain bonuses are that doesn't involve passing the cursor over each and every tile or clicking through all the tiles on the planet.

I dug out my old GC2 manual and found the passage I was referring to, paraphrased (I lost it again lol);

"Certain technologies are capable of taking yellow, unusable tiles and turning them into orange, usable tiles."

It was probably an oversight, or something from beta like you said.

Should probably get it again and direct quote...

I found it. It's on page 27 (Planets and Colonies): "Tiles with yellow borders require certain technologies before they're available for use, at which point their borders will turn orange."

No wonder I couldn't remember this. It's been over eight years since I've read the original manual. Still, I know that manuals can become quickly outdated once patches get released, but that line wasn't even true when I played the demo.