Elongated bowls.
They are a must for a variety of reasons.
I mean if you are building from scratch there are a ton of things to consider for people of all shapes and sizes and preferences. Like K said, beds higher up, toilets higher up, heck even the toilet roll holder needs consideration, larger showers, I would never "install a stall" in the first place. You can use the curved shower curtain rods nwo (we have these in our two rooms with tubs and our daughters tub/shower) so there is more elbow space.)
But just remember because it is rated at 250lbs doesn't mean it holds that. Warranty - if it breaks ship it back to us for a replacement. Will you do that? No. Same goes for water tested watches like citizen ecodrive dive watches that cost an arm and leg and have a great warranty (yeah right), DH has one we have shipped insured overnight three times, they send it back months later and say all fixed up as they have to do pressure testing,e tc it is a dive watch. He goes in the shower witt it and it fogs up. They tell him "You must have the bezel out" uh no, duh, not that stupid. But they will keep telling him that. He reached into our pond to get the filter box and it is fogged up with water..