Could this be a hint?

[Chicolin4u]

I was looking into the ride guide on the official Planet Coaster 2 website and noticed that the flat rides currently have their manufacturers listed as "N/A." Is this a hint for a future update that will give us the in-game manufacturers of the flats?

This also applies to the flumes as well.

 

[rct-uwe1]

They already did for coasters...
Funny that they weren't able to do so for other rides until release.

 

[Iben]

I'm 99% sure that they reused the card component and if no manufacturer is provided they just default to N/A. Pretty standard way to do it, I wouldn't look into it as it being a hint to anything.