It's a common modification,nowadays. The bulkhead is not a structural member, so it doesn't weaken the boat. It does allow for easier entry into the v-berth, and for greater air circulation. With a little addition to the length of the v-berth platform, it allows for a taller person to sleep on that side. It also allows for more foot room for the passenger in the front port side seat. Helps with folks who get claustrophobia in the closed off v-berth as factory equipped. Done on both the CD-22 and CD-25.
Joe. :teeth :thup