I took a look at it but lacks some details I need to show. Abe as I said is a mess, but I think it's the only open-source block explorer available out there able to output a good detail level at a reasonable (although not impressive) speed... and for doing that a db driven block explorer is needed.

RPC ACE fulfills another niche I think, but I agree with you on the point that maybe there's some people out there struggling with abe when RPC ACE could fulfill their needs quite easier.