My wife wouldn't consider any floorplan with a split bath. She didn't like the idea of showering in the bedroom.
AND- we often have guests, so having a side bath is better for us because they can close the room off.
But, our bathroom is very roomy. The shower itself is 48" x 30". The toilet faces the sink. As a bigger guy, it gives me plenty of room to sit down and be comfortable when I need to do my thing. The bathroom is big enough that we are both able to be in there if one is peeing and the other is at the sink; it's cozy, but it works.