Genius idea time: What if the EXP multiplier wasn't completely based on win streak? What if whenever you win it increases by 1, and when you lose, it decreases by 1 (minimum of x1, of course). Your sub still can display your true best streak, but this way you don't get sent back to square one every time your team completely screws up. The high levels take FOREVER if you don't have a streak of 10.