Hello! Just a suggestion. As far as I know, there are two types of plugins on this site:
Free(anyone can download, even without authorization)
Paid(only those who made a purchase can download)
I propose adding a third type. When selected, a list will appear similar to creating a bundle, where you can specify a list of any PAID plugins(even those that are not yours).
When trying to download a plugin of this type, it will check for the presence of these paid plugins from the list, which can be changed, and excluding the Developers group, who can download such plugins without restriction. Similarly, for creating a thread in the support section, either make it open to all or use a similar restriction.
I have two such plugins: AdvancedStatus and MonumentsWatcher. I'll give an example with AdvancedStatus, I made it paid only because I want access to it to be available only to those who bought the plugins it works with. Each plugin page has a bundle with the same price, but many people can't read(or they can not be able to find the button) the pinned message (which comes first) and buy the plugin separately. And they have to buy AdvancedStatus too, which is clearly frustrating them.
Also, other authors cannot create bundles with my AdvancedStatus.
In summary, I am the owner of the AdvancedStatus plugin and I decided to make it a 3rd type. I simply specify a list of all the plugins I consider necessary, and my AdvancedStatus plugin will be available for download only to those who have access to the plugins on the list I specified. And ofcourse, no percentage of sales from those plugins is required.
I hope I was able to convey my point and that it can be implemented. Thank you.