58k would be a big improvement on 50k, I would take that now if offered.
I accept the point that the possibility to increase capacity should be factored in but I guess that would be 20 years off anyway, at least.
I am not concerned about the design, Meis will see to that.
The main thing is that initial capacity is enough to drive money-making potential and that we have an intimidating, yet modern home, with 4 stands for multi-purpose use.
Momentum will be half the battle in getting this built. I am confident Moshiri has the funding taken care of (again, as with design, the end justifies the means), I think we are in very good hands to get it done.