Hi, I intend to try to fiddle with the RAMSES frontend when I have time/need, and thought it would be good to collate a list of tasks that need to be completed so we have a consensus on what needs to be fixed. Feel free to suggest things or tell me that they're already implemented if I missed them: 1) Add support for RT and ATON files, which are now part of the default RAMSES (I assume from the code that the cooling and grav files are already read) 2) Via 1), it might be nice to refactor the RAMSESDomainFile class a bit to provide a more generic Ramses file reading routine/class, since the formats of the files are fairly similar and in doing 1) we might get some copy-paste bloat. 3) Allow for RAMSES runs that only contain AMR & particles (i.e. pure N-body runs with no hydro) 4) Refactor the inputs to fit YT default field names (for MHD, RT and ATON). 5) Allow YT to interpret non-cosmological simulations in RAMSES, or if it already does, remove the warning that says this. 6) Romain Teyssier suggested allowing users to specify their own default field names for user-modified versions of RAMSES. I don't know if YT caches data that would allow this, but I thought I'd punt the suggestion along. Another option could be to allow users to expose the RAMSES namelist files to YT (i.e. the parameter files for starting up a run) - these contain a lot more information on the physics included, etc. I'd put this on a low priority unless someone thinks of something clever that solves this cleanly. 7) It could be worthwhile to implement read-on-demand if it's not already - sometimes the users won't query the ATON/RT/hydro/particle file or certain fluid fields in each file and so we wouldn't need to read those files in that case. This could be folded into 2). Cheers, Sam