It appears you have more than ample room to move that stair door wall rearward, toward the glass door, and have space to build perfect stairs. Providing there are no surprises beneath. You can go, what?... Thirty inches?
That whole area where you are standing is just wasted anyway since both doors open into it.
I am thinking the same as you Willie.
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He is no fool who gives what he cannot keep, to gain what he cannot lose.
It appears you have more than ample room to move that stair door wall rearward, toward the glass door...
If I wasn't planning to open up that wall to the next room... it's still a maybe.
As it is, this space (95") has two doors that swing into it... leaving 33" between.
Then there are the HVAC issues of opening more as well.