Sorry, I thought it was clear what I meant (as Delmbox asked the same question as me)... The implementation that we're talking about is the 'covered seating area'.
I said "We're still talking about the reasons for closure of Castle Street, I assume" - not the closure itself.
If it's not completed, then surely we don't know whether it's been worth the short-term pain for long-term gain yet (I hate that saying).