Could you post a video of you throwing all 14!? I'm very curious to see, I've never heard of someone with that many game ready pitches!
So after looking again I see you do better when you change windups. So id say keepin many different ones is fine AS LONG AS you don't use say Windup A for only the slider and windup B for change ups. Then you're just tipping the batter. You can throw persay 60% change ups from windup B, but you must mix in other pitches or you're just broadcasting what pitch you're about to throw.