we will never regularly fill a 50,000 seater never mind 60k, whoever made that up is talking absolute rubbish
We regularly had crowds of 50000+ throughout the 1970s. The fanbase is out there. We had a track record of big crowds in the past, something the likes of City, Spurs, West Ham never had. Look at any EFC programme from the 70s/80s, we're nearly always near the top of average attendances in the league back then.
New stadiums attract a substantial increase in support. ALWAYS. Look at City, 33/34k in Maine Road, immediately went up to 46000 in the first season at Etihad and that was before the Sheik bought them too. Look at West Ham, 50000+ season ticket holders and they are utterly crap and have never won anything or have any sort of history.
We have to think big to expand the club. You only make this move once in a lifetime. The last thing you want to do is restrict yourself. The ground can be filled. Even if we are struggling past 55000, you introduce cheap tickets to engage the local area. Most of the city is Blue as it is, we all know that, so why not take an even bigger chunk of people interested in going.
The way things are isn't the way they should always be or have to be. That should be the motto of this whole project.
Historically (at least for 118 of our 138 years in existence) we were as big as Arsenal, and can be again, so 60,000 is the rightful number. It's clearly the number Moshiri will go for as he sees us on a par with them.