That would be handy, but unfortunately impractical. Other vendors accomplish that by forcing you to download their entire catalog for every update, even if you only have one or two of their plugins. It helps them sell more product because then everybody's got demos of all their offerings, but it's a nuisance having to download gobs of stuff you don't need.
The alternative is an installer that's also a downloader, so you check off the items you want and it fetches them for you. The downside to that approach is that you must have an internet connection to your DAW, and not everybody wants to do that.
A middle approach would be a downloader that you can run on any computer. It would prepare an installation package for you that you can then move to your DAW and run. But I've not seen anyone implement such a solution yet.