oh, no door at all! I only got that you wanted to be rid of the frame and to change the shape.

we're just guessing at the shape of your shower, since most of it is hidden from view, but it's certainly going to be helpful to put the plumbing far from the opening and/or facing away from it. so if "the far end" is back behind that storage cabinet, that's likely to work better. (of course, then you'd still need the controls near enough to the door that you could turn it on easily, so maybe you just need to move the shower *head* and not all the plumbing.

have you considered just opening up the shower to the ceiling and then using a regular glass door? that would help with ventilation too...

Dimensions would help you get better answers.

If you are going to have a shower closed off this much, then you need to tile all the way up the walls and the ceiling. The doorway into the shower and the threshold of the shower need to be tile. It would also benefit you greatly to put at least a fan/light (wet rated) in the shower but even better would be an inline fan on a humidistat.

Unless you shower is much, much larger than what we can see in this photo, then you will need to have a door. You will not be able to contain the water. We have had shower heads as much as 4' from the opening to the shower head and water still rolls out some.

That's about the same size as our shower at home. I would not attempt to go without a door in a shower that small.

Agree with brickwood