OP, you just sound bitter because people aren't jumping on your idea. The fact of the matter is this, the developers (well technically I don't know how much pull developers actually have on decisions) control the economy of the game. If they wanted to make needed shards more accessible I'm fully confident they could determine a solution for this. The purpose for not making needed shards easier to get, extends the length it takes to acquire 7* characters which in essence keeps the game going and less of a need to introduce new characters.
Too often people suggest items because they believe they are insightful when in reality things work a certain way are purposeful...this is one of those cases.
