I needed some alternative for Sportsbet to find better odds and sport events not available there, so I will be testing Rollbit in next few weeks to see how everything works.
Rollbit does have better odds in some markets sometimes when compared to Sportsbet though they don't offer lucrative boosts in various sports on a regular basis. Heard of people getting limited quickly too though I am not sure about this.
I don't think you will find many new markets in Rollbit when compared to Sportsbet based on what I observed.
And if you hold the sports Rollbot you get extra benefits that other casinos don't offer as you get free spins and extra Rakeback for each bet placed depending on the V2 Rollbot you hold and for sure boosting the utility of their platform token.