Features I'd like to see in a Podcast subscription tool

Or a podcatcher, if you like trendy, made-up words.

Here's the basic features I am looking for:

• Support the Vista centralized feed list
• Automatically download RSS enclosures without me doing anything
• Support for any enclosure type - IOW, leave format support up to the player, your job is to pull down the files
• Store them in the folder of my choice depending on file type, videos in one folder and audio files in another, as opposed to per feed
• Create a playlist for Podcasts across any feeds I choose and update the list as new files arrive and old files are deleted, this would include both videos and audio files
• Allow me to customize the metadata as enclosures are downloaded such as custom genre and tags, and allow this to be applied to individual or multiple feeds
• Rules for downloading the X number of most recent posts
• Archiving - automatically delete old files as new downloads complete
• Options to run manually or at startup but stay out of my systray

Technorati tags: Podcasting