Not sure how I feel about that, but it's an interesting idea. I heard others say every transaction should cost money, for example sending memos (to stop memo spam) but that's a core feature of Steem is the lack of transaction fees.
Once it is 10 cents, it will slowly grow like Bitcoin fees have. Once the door is open, it will just become larger and larger.
RE: The frustration and difficulty of fighting spam on Steemit