@Will1991 ,Agree that the CT attracted new buyers to the brand, but most of those new buyers just bought it for mpg.
the problem with CT that is was half packed because of the Corolla, which was the main problem for CT, for Toyota to make the CT they made both the CT and Corolla half packed, same with Avensis and HS, honestly even same went with ES until the end of XV40 life cycle, it was very much just a Camry luxed trim nothing more, that's again because of the name of Camry is more wide spread and we'll known which made the ES always half packed, just everything started to be in favour with the ES after they turn the ES to Avalon with the XV60 and the current XZ10 as the Avalon also not have long heritage name so it became one car with totally independent 2 teams for each one of them, not dependent on each other. You can see yourself that to spread out the IS/GS Toyota killed Brevis, Verossa, Progres, Altezza, Aristo & many others "the spider strategy" which finally they just stopped fortunately.
The same current problem can be perfectly appears on GX and Prado, the same GX already found in trim within Prado and that what's makes me sure that either Lexus will delete the GX name completely or the next GX will turns to be LF-1 as the "G" always is matching with the sport