I am often tempted to use the "All buildings" option in sandbox mode as a means to use all the assets in the game to create hybrid parks or to have access to all decoration items while sticking to a theme.
The only issue I have is that the small transport helicopters, as well as the aviary and lagoon drones, are all tied to the Jurassic World aesthetic. This often clashes when I want to go for themes that have more to do with Jurassic Park, the Department of Fish & Wildlife, or Biosin.
I am hoping we have the sandbox option or an in-game method to change these vehicle aesthetics to better match the park's primary theme. Such as having the look of the small transport helicopters be tied to which control centre we place as the primary building of operations, so a JP control center would have small JP-themed transport helicopters spawned in, or Biosin-themed transport helicopters if the Biosin control centre has been placed as the primary building of operations.
As for the drones, I think having them spawn in with an aesthetic tied to what themed aviary or lagoon they would be spawned from would be very convenient. So a Jurassic Park lagoon would spawn in a lagoon drone with JP colors, or a DFW aviary would spawn in an aerial drone with the DFW colors. This would mean a set of JP-themed and DFW-themed drones are needed to be introduced to the game, and I think the effort would make the overall aesthetic consistency very satisfying.