I've used apps that can can zoom in on and intelligently enlarge speech bubbles and panels, I'd certainly not call it an elegant solution. Maybe given the restraints that a small screen imposes it's the best solution you will get. But I certainly don't find it fun having to contantly zoom in on and and around pages. I see comics as an art form and they are written and designed so that you can take in more than just one panel at a time. But hey that's just me
I'm always on the lookout for the perfect device. I guess I'll always be looking. And as always everyone has different wants/needs.