Why delete all you old files? If you think your rank will improve I think you are so wrong.
What if somebody want to download those files. You are making hotfile a short term filehost. think about the downloaders. even 2 years after you uploaded somebody may want to download those files.
HOT file Sucks now.
it not uploading remote.
Dont delete old files....i never deleted my old files....i always get a constant SILVER rank.....u should do is spread those links......