First and foremost, the rough in plumbing for your shower should be in an interior wall, that worst case, you can open up from the other side (drywall is cheap).

So if you have repair issues in the future, you rip open the drywall, fix your plumbing, and then do some drywall repair. Best is if it backs a closet in an adjacent room.

If we're talking about soldered copper plumbing, the chances of it developing a leak after you've done the work and tested the joints is pretty slim. So whether you have jets all over the place or not, the only difference is the number of soldered joints inside the walls.

A surface mounted shower 'wall' is of course pretty versatile, but you're stuck with it. If something goes wrong, you need another shower wall that matches the roughed in hot/cold supply from the wall. I've never looked at them so I don't know how common/universal the rough-in requirements are. So I don't know if you can simply pull one off and replace it with a new one.

Also keep in mind all those extra jets need more water supply, which might require bigger pipes.

Thank you Toronto Tim, I just went with a regular shower system . You are right about something going wrong than I will have to change the whole unit. grohe already discontinued their line for shower panels because they are outdated now. I hope my plumber will do a good job at soldering the joints.