I am going to be allowing customers (customer center role) to access a suitelet that allows them to edit some info. Because I can run a suitelet as Admin, I'm going to use the suitelet as a rest end point as well. With the concurrency restrictions, has anyone done this or have any reservations? I'm not quite sure what our suitelet concurrency limit is, but it lets me get past the Customer Center role.

I built all of our customer centers as basically one big suitelet and have yet to have issues. No rest end point, however. We get approximately 200-300 uses per day of the customer center and haven't had trouble. Fingers crossed that never changes!

Haha, have you figured out a different way to get around info that they can't have added to their role? Like the ability to view Documents & Files?

Still trying to figure out viewing docs and files. I built an upload suitelet so they can upload them but then they cannot view them (not ideal but us getting them is pretty important). I have on my to-do list plans to look into some third party solution but haven't found anything promising yet to explore.

So I have an angular app being hosted in a netsuite suitelet. My goal is to let the customer login through the internal suitelet, then all of my rest calls to the suitelet will be to the external. I'm thinking that this will allow me to work with Document & Files

No, but I see this in SuiteAnswers: "The governance limit for concurrent requests for Suitelets available without login is the same as the limit for RESTlets. For information about the account limits, see Web Services and RESTlet Concurrency Governance. For Suitelets that are authenticated through login, the number of concurrent requests is currently not governed."

Thanks! That gives me some ideas!