I like the metal and two screw connection for stability.
Perhaps this idea with the shower on the other side of that wall. That would be moving the built-in in our current plan to the south wall make it a built-in tub with a pony wall glass in the shower on the other side?
maybe something like this only with a built-in tub?
Separating the shower and the tub with a wall. This allows for grab bars.
Wrap tub in same tile as wall?
The separate vanities connected by makeup shelf. I’d prefer to keep it level and use a bar stool.
Make the pony wall floor to ceiling. This looks like it would fit against the South wall.
Right idea except use trough sink with two faucets and vanity sitting on floor.
Vanity layout without the hutch. Add electrical outlets in 2nd drawer for hair dryer, shaver, tooth brushes.