No, it wasn't. GX was to expand to a certain size and stay there, only allied to one or two realms at most. As for Alara, they might have been lower on the totem pole than GX if they allied with them, over the long term that would have been the best way to turn around and break said alliance, once they had Minas Nova's lands. And any realm that gets reduced to their sole remaining city as fast as Alara did isn't exactly going to be equal to anyone in any alliance they make, so I'm not exactly sure where you're coming from with this argument.
Really? Because I remember distinctly that the rulers in GX really wanted Ibladesh City as well, either within GX or as a new realm. I'm about 70% sure this was also the information the rulers in Perleone had IG.
As for Alara, they were outnumbered enormously in noble count compared with GX, but GX is an exception in this case. In most other alliances at the time their noblecount back then would have kept them on a relative equal basis, especially if they can take some lands from GX in stead of Miinas Nova. It's Minas Nova who has the most problems atm with thei size of their cities, location and neighbours.
With the difference in noble count I'm not surprised GX had a strong upper hand from the beginning. 1 on 1 GX would beat any realm atm into a pulp and that's most likely what's scaring all the other realms. As all everyone else has heard is that GX wants to expand and that they have a lot of nobles. Everyone then did their math and went "uhm, nope let's stop them!"
