I can't even be bothered to read comments about this ride anymore. People slander it constantly no matter what. Frustrates me that people hate on it when it's just as good a ride as Nemesis, which gets worshipped to an unhealthy degree
Opinion is always subjective but you put your opinion out there so here is my counter.
The Smiler layout is good, it’s punchy and intense, if you ignore the terrible profiling and the variable roughness depending on how recently the wheel compounds have been changed it’s an ok layout to do what it was intended to do which is beat the inversion count record.
It’s theme concept I actually like, the theme execution is absolutely terrible.
As for Nemesis it is an example of how to transition from element to element whilst building pace. At the time it was built coasters didn’t do that, even the inverts that came before followed the formula of drop > loop > loop> corkscrew > corkscrew. Nemesis did something new and people noticed.
Also at the time the theme was unique, it was also rare that a thrill rollercoaster would be fully integrated into a theme (at this point Disney didn’t really build thrill machines). Most coasters where maybe a themed station and that was it, but Nemesis used the landscape to enhance the thrill.
Basically the Smiler has a job and it’s layout does the job well, the profiling is dire and the theme concept although good was not implemented well.
Nemesis for it’s time did almost everything correct. I would also argue the helix is more intense than anything on Smiler.