Opinion Poll: Should we keep API related to addressables visible if the addressables package is missing?

[starikcetin]

Back when I was developing the addressables support, I had to make a decision about what the behavior regarding the visibility of the addressables API should be when the addressables package is missing. These were the options:

1. Wrap API concerning addressables in #if directives, so that they are only visible if the addressables package is installed.
2. Keep the addressables API always visible, and throw exceptions if the addressables package is missing.

I decided to go with the option 2 back then because it made sense to not conditionally add and remove API based on an external factor.

Recently I started think this was not the right decision. If I have gone with option 1 then calling addressables API when the addressables package is missing would cause compile errors. Option 2 instead causes them to throw at runtime. Therefore we are pushing what could be a compile time validation to runtime, which makes iteration loops longer.

Therefore I want to ask everyone's opinion: should we change to option 1 instead?