We're roughly in that size range and we handle support internally. We go out of our way to make it possible to talk with us and interact with us directly. You can:
- Start a live chat from our web site or within our app that goes straight to one of the founders or the lead software engineer.
- Shoot email to any of the common email addresses you might imagine and end up in FogBugz, which we use for defect & customer service tracking. We make sure everything gets responded to asap and we know what we said & who said it by tracking it this way.
- Give us a call to our local or 800 numbers (Having a local number is key because 800 numbers don't work internationally, and we get a surprising amount of our business internationally)
Regardless of what channel you use to contact us if we can't resolve the question immediately, we offer to do a desktop share with GoToMeeting so we can see the user's desktop and resolve the issue as fast as possible.
Would all of this scale up to a large company? Probably not. But right now you have to ask yourself: What else are you going to do with that next 30 minutes that could create more revenue or good will? We also find out the best feedback on our product this way - not by what people say, but by what we can see. Watching someone use it through a remote desktop sharing session and seeing how they got trapped & what they need to do illuminates a lot.
We track any enhancements we think we need to back into FogBugz as feature requests. In the end it's our experience you don't need to be particularly fancy tracking feature requests because the important ones will keep showing up on their own - either they happen enough through prospect/customer interactions to be front of mind or you've made a commitment to someone to deliver it.
From all of this my recommendation is that you keep your internal, non-visible processes lightweight and flexible and emphasize finding any path to get into dialog with your prospects & customers. Later on as you have revenue and volume you can incrementally address the most important business scalability limits as you go.