Here is our shower over bath set up and what's good and bad about it:
Bette Ocean bath. Great quality, loads of internal space, one squared off end so great for showering.
As a special order Bette do a built in upstand on their baths, which means wall tiles go over the upstand and you can avoid using silicon which always goes mouldy! (I don't have the upstand but definitely will next time).
180 degree pivot bath screen, and high wall mounted shower head. The screen swings under the shower head and folds flat against the bath end wall. So can be totally out of the way when bathing kids.
The shower and bath controls are on the long wall so 1) don't get in the way of folding bath screen described above and 2) no need to get arm wet.
Bath filler to avoid bashes on taps. It is slow though so I often start the bath filling using the shower! It's not a water pressure thing as the shower is quite a lot faster. Apparently bath fillers are notoriously slow. Using the shower solves it though.
Hand held shower attachment - possibly a Bad Idea as they like to play with it. No disasters so far but... I mostly use a jug instead for the DC.
Quietmark rated extractor, goes on with light, but also has high up override switch if you really want quiet
Two sets of lights, bright (ceiling) for general use and soft (either side of mirror) for nighttime wees/relaxing baths.
Tiles - we have different ones on the wall and floor and they don't really work together. Did in the showroom, don't in real life. Learn from my error and use the same all over, or just plain white on the walls... (if floor tiles have a white background)