I have a couple of suggestions:
Can we open a topic for business owners, which will be useful for anyone who freelances or has their own business - in any industry? It could discuss marketing, useful tool and tech, how to hire the right person, how to scale your business, what to keep in mind when designing your website etc - there are a whole range of topics within this.
Also, how about a topic about career - also for any industry - where people can discuss resumes, interviews, asking for raises etc?
And a topic for digital marketing would be great, too.