We have also considered a side dinette, 4 berth as opposed to a 2 berth for similar reasons.
We decided that there was too much compromise on storage and space in the end bathroom to be worthy of changing.As per usual there is a trade off, the more you want the bigger the van, the bigger the van the bigger the towcar, the bigger the towcar the bigger the expenses.
For rare occasions that we may have anyone with us, we will sleep in the awning !Besides, if the grandchildren can be put up too easily I can forsee a surfeit of "sitting" duties !