An article on Fox Sports talks about setting KPI's to decide how to move teams out of Sydney. Tallis and Geyer set some KPI's based around Sponsorship dollars, average crowds, Membership numbers. commitment to juniors and On field success.
I have picked two metrics to consider firstly average Sydney crowds since 2015 according to Fox. The top four teams in order are Dogs (15,011), Eels (14,602), Rabbitohs (14,358) and Tigers (14,226).
The Top 4 membership numbers are according to Fox; Rabbitohs (29,597), Eels (25,250), Dragons (20,642) and Tigers (20,155)
Whilst these numbers are interesting, they are important given that they directly link to revenue. However these crowd numbers appear to be based on average Sydney games (all games) since 2015, If you look at what the Eels have achieved this year for all home games it is 177,643 for ten home games at an average of 17,764. This includes home games at Bankwest, ANZ and TIO stadium in Darwin (5,391, smallest crowd for 2019).
If you extrapolate our 7 games at Bankwest we drew 147,700 spectators for an average attendance of 21,100 people. The smallest crowd for an Eels home game has been 16,228 against Penrith on a Thursday night. The largest of course was the opening against the Tigers on Easter Monday 29,047 Round 6,
There is no indication from the NRL that they are going to reduce teams or if they have any KPI's in mind. But if you were to look at the Eels numbers there is certainly a compelling case to keep them in Sydney based on any resonable metric.