Everybody has there own idea of the ideal floorplan but personally I think the Revolution 42T with rear bunks is the ideal floorplan for a family (I love the Discovery 42A but the Revolution is much better). Especially with younger kids, I'd really want to have our room between the kids and the exit door. Also one of the main complaints for bunkhouse class As is that there is very little privacy because the bunks are usually right next to the master - in this case there's the bathroom between the two. Another complaint is that in most floorplans, you have to walk by the bunks to get to the master bedroom, possibly disturbing sleeping kids.
In any case, if you want to see pics of a Revolution 42T bunk conversion, American Coach used to have pictures of a custom conversion 42T on their Facebook page. The conversion was done for an ex-forum member. Here's a link to pictures of his:
http://s882.beta.photobucket.com/user/allencrabtree/library/.