right now in theory it allows different sized icons... the metadata can exist and define it.. but i have not provided a ui to change sizes... but yes... amiga-like :) there is a .efm/ dir in each dir ... and in this can be files for thumbnails, or metadata (as well as metadata for the dir view as a whole). if you don't have write access it can shadow these in ~/.e/e/efm/meta/ - i thought a lot on this and chose to put the data in the dirs because in the end it's the sanest place to have the metadata follow files as you move/copy/delete stuff around your filesystem. some of this metadata can define x,y per icon as well as size... they are little .ini format files per file. so as such in principle it is a bit like the good old amiga .info files ... but just stored in a different place and now a .efm/file.meta.efm or .efm/file.thumb.efm.eet for thumbnail data...
http://www.rasterman.com/files/efm-typebuf-ex.webm