I'm in a similar boat with regards to launching a new, unknown product in the snap store. As an interim solution I'm planning to ask users to do use the beta flag: `snap install my-app --beta` which gets me around the secure sandbox requirements.
Just wanted to easy one worry of you: the age, popularity and maturity of your application has no influence on whether or not these permission requests are granted. The approval process is formally defined and mostly depends on what your application does exactly.
