Will admit I haven't read through the whole thread but have done a search and can't see marketing mentioned anywhere.
That could have been one angle that the SGI management were looking at when raising the idea of a name change.
Sports teams that have the name of a city or region will most likely be more appealing to a novice or new spectator to a sport. Melbourne, Brisbane, Sydney, Gold Coast and to a lesser extent North Qld would be more instantly recognised globally than Canterbury - Bankstown, Cronulla - Sutherland or St. George Illawarra.
If in the future - say between the next 10 to 20 years - our game can grow to a point that it is a recognised and respected sport in new markets, in particular North America and Europe I would think those seeking merchandise would be very selective in their purchases.
An international tourist buying a jersey of the Southern Dragons,or Central Coast Eagles or West Sydney Bulldog when holidaying in Sydney would be more profound than a St George,Manly or Canterbury jersey.
Random Stats website on soccer jersey sales shows most are clubs with a major city or area in the name. Juventus sales were due to the signing of a major star (Rinaldo I think ?).
As a SEQ based supporter of the Dragons for over 50 years I obviously don't have the 'on the ground' emotion of those who live or lived in the area.
However I do see our game eventually getting a global focus ...and those clubs with a smart marketing and identity team will reap the rewards.