I have a stupid port side double berth I am tearing out in the aft cabin in order to go athwartships aft. Yes, I will have the "deck helm" cockpit descending toward my midsection, but it's just a matter of throwing the pillows to the high side and I won't need lee cloths. If the boat is pitching fore and aft that much, I wouldn't be in the aft cabin sleeping anyway...I'd be snug in a coffin-like sea berth of which I have four.
This will free up about a metre of space between the bed and the bulkhead which I hope to use for "office space" and as a dry, dark place to keep HF radios and computer equipment.
The centerline bed sounds nice, but it's got to be the most impractical set-up (unless you are at dock) and the floor space on either side is essentially wasted.