Rogue Squad was great... It gave the "atmospheric combat" X-Wing and TIE Fighter sorely lacked... It's something that I guess was on the counter for a future X-Wing game, but never came to fruition.
I loved Rogue Squad though, and loved the vehicles they added to gaming... There's some awesome little Rebel tanks I want to mix into my customs some day. Simplistic designs but what I always envisioned.
Some of the "standardized" looking buildings were awesome too... And the story being a solid fit was nice too.
Rogue Squad 2 and 3 were... eh... Well, the graphics were outstanding at the time, and I felt the story was pretty good on the earlier of the two. The game play was a tad wonky at times though. But they were certainly solid games at the time, and pretty much all Star Wars was doing was on the Gamecube aside from KOTOR back then.
I will never say that these were better, or even on par, with X-Wing, TIE, or XW: Alliance though... Those games, their sheer expansive feel, the ability to break from the constraints of a "playing field", the complexity of the stories interwoven into all 3 (They're really great EU on top of great games), the game play dynamics of all 3 (building upon each other), the complexity of the game play (needing your ENTIRE keyboard and appreciating a complex joystick with many buttons anyone?)... These things just made those games epically more complex, and for me immersive and realistic... The RS games were fun, but the arcade style took me out of the element and reminded me I was playing a game... X-Wing was a game that, if you could afford it, would've been insane inside a multi-screen "cockpit" thing, kind of like the old Star Wars Trilogy arcade game was like...
For me, Rogue Squadron felt more like a filler type game that gave you some atmospheric missions that were quick and fun, but didn't have all facets that made a game great, like the flight sim series had. It was almost like they were made to go together slightly, but not totally... Their stories do kinda intertwine slightly too though.
The Game Cube games introduced new characters and ships too... I still want to make that Imperial APC. I loved that! totally could see that thing alongside some walkers.