[nshntarora]

What worked for us:

We did something like this with our early users. Called the thing "The Builders Program"

For the medium, have one default you use but don't limit things to it. If one of your early users wants to use twitter to contact you and give you feedback, use that. We created a Discord server, had a group Twitter DM, used Email.

One thing you should do early on with these users is show them you are listening. Pick something they say and ship it as soon as you can. If they see you're listening, they'll be more active in sharing feedback.

In exchange for being part of the builders program we gave them lifetime free access to the product later on.

[LoriP]

Yes, I think that valuing them through a named program is a great idea.

... and finding out what 'reward' they value the most, it might be different for different folk but free access to the product they supported is a great start.