Yes it is a good sign he's talking about it with those plans. What's crossed my mind is that it says about tread depths of 800mm. That's quite large, for comparison the Park End is the largest in Goodison at 700mm. Assuming it's 800mm all over (it does say average) then you could cut that down in both the Ends to 700mm and that would free up room for an extra 10-15 rows to be added to the North Stand.
One interesting aspect on the North Stand, on one angle it looks as though the North Stand upper overhangs the lower, whereas another angle it doesn't?
On the sides I'm surprised that the upper tier isn't brought closer to the action by making that overhang.
The comparison to the kop shows that they have 76 rows on the same footprint to less than 60 on ours, implying that they have more fans closer to the action there than us. So I'm wondering if the average viewing distance is as good as it appears on ours?