For Tassie, upgrading one of the existing cricket ovals would be sufficient, at least for the first decade of its existence... if the team was a success i.e. supported by the citizens and taken into their heart and soul, then there would be grassroot support to lobby for a you beaut stadium.
AFL really didn't want a Tassie team, threw out these onerous conditions expecting them to be rejected, so they could say "well we tried, but the State government didn't support it"... but the government swallowed it whole, instead of calling out the shit deal and putting up an adequate stadium solution and said "we'll roof it when every other AFL team on the north island has a roofed stadium".