It would be great to have the balance showing on the dashboard without having to jump through hoops to find it (ie. initiate a brainstorm or generate a campaign with AI).

In addition, having a static 'buy' button that is always there so they can buy more when they see they are getting low would be AMAZING! Instead of having to, again, jump through hoops to get the buy button to appear (ie. creating a new campaign with AI in order to get the buy button to pop up)

What if they are already at their 5 campaign limit?

IMO, implementing both would be a HUGE upgrade and eliminate a lot of hassle in terms of user experience.