I see where you get the idea, but in all reality it is not a necessity. Even IF this gets approved, the MOST that would happen is being able to start at rank 1 or 2, and that all depends on the race too.
For example. You wouldn't be able to start a Rank 3 Hollow, because that skips ALL of the fundamental evolution that you have to go through in developing your character. In all reality that's a gate-way to instant Arrancar and Cero, and in my opinion that is very OP. Rank 2 or 1 Hollow isn't too bad, because you still get development of the character. I don't completely agree with it, but to me it is acceptable.
Another is for Shinigami. Even though there is a lot more to go through as a Shinigami (Bankai, Shikai, and further evolutions.) and a lot more to unlock with power paths to decide for, it's the same idea. Starting a Rank 3 Shinigami grants you the choice of learning Shikai, an ability, kido 1-40. and Shunpo. Rank 1 would be a okay, and Rank 2 would be... Meh.
For Quincy there isn't much hope, because Hirenkyaku is able to be learned at Rank 2, and anybody would agree with me, starting with a Shunpo/Sonido/Hirenkyaku is pretty OP. Lowest I could see is a Rank 1 start, but no higher. If Hirenkyaku was learned later, than I could see that a possibility of starting at Rank 2.
For Bount it's pretty much okay. Starting at rank 1 or 2 would only mean there is a bit less of development needed, and the person has to just push through that second rank. (It'd be hard at first seeing as they probably wouldn't be used to the forum style, but after about four posts they'll be used to it.) Again, Rank 1 is okay, in my opinion, for any race, but it's still not fair.
For Fullbringer, it's just about the same thing. Rank 1 or 2, but any higher would be a bit too much. I understand WHY you would want this, but I see it quite pointless due to the fact that NO moderator or admin would agree to it, and most of the RPers here like the developmental stage. However, the Hollow RPers are probably on your side.
If this were to get accepted, and this is highly unlikely, then the highest Rank that should be allowable for start is Rank 1, but that is just me.
I say...
- Spoiler:
No.