Thanks Scyla for explaining it more clearly.
A comparison of how the bay doors open up for the VF-0 and YF-30 respectively:
IMHO, the yf-30 rear bay door that opens up perpendicular to the roll axis hangs much lower than what we see on the vf-1, which would produce more resistance during take off and landing, and is aesthetically displeasing.
Sorry, didn't add the comparison picture. Here it is: