I've discovered vanilla through the recommendation of my friend. I've been using it in some of my projects and I really just love the convenience it gives me and the add-ons that I can download from the community contributions. I want to bookmark my preferred collection of add-ons through the site and I hope you can provide a facility where I can mark my collected add-ons for downloads so I won't have to search for them everytime I have to make a fresh installation for every site that I am doing.
Well yes there's always that, but I have found myself wishing for that very functionality on the addons site several times. It would be a nice feature for a number of reasons.
It could provide a list on the user page that allows you to easily access (for download and discussion) the addons you use fequently.
It could track when you last downloaded an addon making it easy for you to see when you need to download a new version.
An RSS feed of your favourite plugins could be created which let's you easily track conversations for said addons (when the RSS addon works!).
The number of people who have favourited an addon could be tracked enabling a simple "popularity" rating for addons (just as informative, but different).
It's not essential I know, but it would be very nice.