Shared files are currently rescaned every 10 or 15 minutes (I'd have to go looking for the thread, but I just woke up, so I'm not going to)

There is bo need to resume aboted files, simply pause them instead.

An upload log may be nice, but not one that resides in memory. The program is designed so that a large number of files may be shared, and running out of memory whilst keeping a record of the status of every finished or aborted upload would be bad. If this is done, create a log file on the disk and append to it.