Do you think we'll get any other movies set in the 'Arkhamverse'?

Maybe, maybe not.

I think there is definitely potential for more stories, but at the same time, the timeline has become confusing.

I think if they do make another Arkham movie it should be like an adaptation of the graphic novel "Arkham Asylum: Living Hell" which told the story of the Great White Shark (Warren White) and also had Aaron Cash in a starring role (and showed a flashback of the time Killer Croc bit Cash's hand off).