But apparently, if the thread title is to be believed, the OP wants to develop "a real serve". And in the end, if he really wants to improve he needs to fix his serve. It's like rock climbing, anyone strong enough and brave enough can get up a 5.10B, but they'll never get past that if they don't develop the right techniques.
And I don't really think he would lose matches if he changes his serve. His serve is pretty poor as it is (no control, no consistency) - I can't see how it can get worse.
I don't have all that much time, and I'm trying to transfer to a school whose team I would never make, so my motivation is considerably less than it was 6 months ago. However, I am trying to hit some serves each day (or at least was during the week I had when I was both at school and not in class). I have better form when doing that but it produces a ton of doubles so I hit it weaker and with worse form when playing. My ball toss has always been an issue, I am trying to hit it higher but thank you for pointing out I still fall back into that bad habit. I've actually had a couple coaches tell me that my grip, while still a bit odd, is acceptable now (unlike in the first vid). The main thing I noticed from this video was my feet- Jesus, I had no idea they moved that much- or differently from point to point. That's got to be the first thing I fix.
Thanks for feedback, positive or negative.