Ok, I plan to add a simple per-directory sort.. I hope that will be sufficient. (the contents of each directory will be sorted, but when shown as a simple list these may not appear sorted if they come from different subdirs in the artifacts tree).
Regarding zip download, it is always available.. ie, from a build page you can always tack /artifact on the end of the URL to reach the DirectoryBrowser which has the zip download option.. it's just that there is no visible link to this when there are < 40 artifacts.. might be useful to have such a link (but where? hm).
Do you see unsorted list in simple list view (<17 artifacts) or only in tree view (17-40 artifacts). I don't see any code here regarding sorting, before or after the tree view was added in 1.330, so I would expect the tree to be in arbitrary order and the list to be in whatever order the directory listing returned, which is not guaranteed to be alphabetical.
Can we reclassify this as a request to add sorting for both list and tree displays?