Don't feel to down - the Phoenix must rise, everything has its hour and the tram WILL return to Brissy streets one day!
After some serious thought, personally I think the answer is no. Comparing Brisbane or just about any other Aussie capital to most Eurpoean cities is not realistic. Generally the are high density with limited places to park cars, narrow streets making car travel less diserable and have much higher fuel prices and the cities themselves (the multi story building parts) are very large, not a few blocks like Aussie capitals. I also think most of the cities reintroducing trams are doing so because either a UG or Above Ground heavy rail system is either extremely costly and/or impossible to build due to geography etc. ie Spain has a very complex and extensive UG metro thats being expanded, there is no way they would need to look at trams.
In Australia I think we will see LR to some limited degree return where things make it cheap and favorable. ie Sydney's tram mostly used a closed existing rail corridore Had this not been there it would not today have a tram. Melbourne kept its trams mostly due to road width being a flat city and Mel's LR used mostly heavy rail corridores (and now takes much longer than the previous train did, one wonders had the port Melbourne development gone ahead in the 80's would the HR been closed?). Likewise Adelaides only tram survived because it actually used an old railway corridore, but they terminated it short of the very wide and very uncrowded CBD streets. The proposed extension through the city has met some fairly heavy opposition.
Brisbane has narrow streets and mostly hilly. I like trams but I think they are slowly than buses over the same route and in a city like Brisbane, Busways for the short routes or longer on geographically challenged areas out of the city will be the future, HR for the longer routes. LR will probably struggle to get a foot hold for some time, at best the SE busway.
And yes the ironic thing about all this is that many bus routes in most cities in australia still follow the orginal tram route, yet the govt of teh day closed the tram systems saying buses were mre flexible.