I'll quote Rodney Berman from an interview he gave in 2010.
"The ice rink was originally part of our plans for a much larger multi-purpose arena but when it became clear this would take longer to deliver the rink in that way, we took the decision to instead progress a stand alone facility".
Oh the irony, that the stand alone took longer to build than the original concepts.
Since you seem to want to compare this similar facility, l only showed it as it has a tier above a similar layout to IAW.
It has 3,500 seat capacity and was €9.5 million + VAT & completed in under 2 yrs. A separate public rink, fully staffed restaurant open daily and attracts non ice events.
Yes it completed pre crisis but Cardiff Council set aside their budget plans pre crisis.