Idea for Runes@RITO

Have we ever considered only having 1 tier of runes that "leveled up" as you did?

For instance: you are level 5, and you decide to get some flat attack damage runes. When you buy them, (prices are all fixed now), it is a tier 1 rune. Later, when you hit level, say 12, your runes automatically upgrade to tier 2 levels of power. All runes purchased beyond this point are also tier 2. Upon reaching level 24, they upgrade to tier 3 and all runes purchased beyond this point are also tier 3.

I mean, personally, I see no reason to have tier 1 and 2 runes at all, but if you were wanting to keep the rune tiers, wouldn't this be a more user friendly way to do it rather than having people accidentally waste IP on the lower ones and then never use or be able to sell them?