Don't really like talking about them lot, but regarding attendances in the city, and similar capacities could be relevant.
Anfield 2018/19 season so far
West Ham United 53,235
Brighton & Hove Albion 53,294
Manchester City 52,117
Cardiff City 53,373
I think within the city, with the right facilities, theres no reason not to imagine us getting attendances of 50-55+, more for big games. A fantastic dock side stadium would also be a prime venue for major football and a multitude of other events, so again, I really think we would be best airing on the larger side with a view to expanding it even further. I think 60K or 61,878 is a good shout tbh. i.e. Id sooner have a 60k stadium even if we only got 53k fans in, than have a 50k stadium and disappoint 3000 fans, if you see what I mean... Even if we up away fans allocations, there is no reason why, against several sides, we would not get 45-50k blues and 5-10k away fans, based on decades of 40k at the old lady with shit services, access, parking and restricted views, etc.
Nothing but the best should be good enough, and if were going to do this, after all this time, lets do it right.