Limit registration field available values per host entity

On the event creation form it says "Select what type of registrations should be enabled for this sng_online_conference. Depending on the display settings, it will appear as either string, registration link, or form."

I want to be able to restrict which options the event creator has.

Can I currently do this via roles? (If not this is a feature request)

use case 1: Features integration
The way features works is that I have to create registration bundles for each feature. So if I have event and a meetings features, I have to create two different event registration bundles. If I create an event, I don't want someone selecting the meeting registration bundle.

Use case 2: To further complicate maters
So for the meeting I might have a basic and adv registration or a vegan vs carnivore registration. And there is a seperate event feature which has been enabled but the meeting creator does not have access to.

I would like to be able to either give the meeting creator the option of selecting either or as an admin I select one that cannot be changed. In either case, the meeting creator should never see the registration entities for the event feature.