tagging with time specificity

I'd love to see a feature where RSS feeds are tagged with importance.
For example, some feeds I'd love to be brought to my attention the
exact moment they are updated. Some I may only check once a day, some
maybe once every few weeks or just browsing once a month. Right now I
tag them with numbers followed by a descriptive time label:
1-important
2-daily
3-weekly
4-biweekly
5-monthly
6-random
So potentially if I just look at my 1-important tag I will see only the
feeds I truly care about and want to pay attention to. Whereas with
6-random, I can place things like del.icio.us main feed which is really
just random links. Its good to have access to a pool of random
interesting links but it is NOT good to have them overwhelm my
important links.
Any thoughts on making this an integrated feature of Reader?