I’ll second the vote for caching pages for registered users. For sites with little customization, but which limit lots of stuff (commenting, posting, voting, creating content) to registered users, it’d be just great.

I think it makes sense to enable infinite cache for all pages that are unchanged. As I am not a developer, I may not have a clue about this. Is there a reason this isn’t possible at all?

Thanks for the module and looking forward to seeing a 5.x version of the module. It is greatly demanded. I’d even barter my services (SEO, usability and copywriting consulting) for the quicker development of the module, if you are interested.