Let us vendor runes for IP (Suggestion)

I'm sure there have been instances in the past especially where you accidently purchased one rune to much, or you have Tier 1-2 runes wich you are never using that you would like to get rid of.

Or if you happen to buy a set of runes and then you see that you made the wrong purchase, then you could go to your rune page and vendor these runes for the IP or even 90% of the IP cost if necessary in order for you to make the correct purchase.

I for one would like to clean up my runes. I have 10 runes of some and some Tier 1 and Tier 2 runes Ive never used. Now you cant purchase more then 9 and thats a good thing but there was a time when this was possible.

Is this something you would want to have the option to do?