Yeah, I like GIJ's for what they are as well... I think they're a good toy line, they're just their own "style", and that works for them.
There's huge gaps at their hip joints though, clearly visible. They have huge gaps where the metal pins go into their thighs. They often don't want to sit right at the waist (their ass sticks out awkwardly) because of the O-Ring mechanism. They, of course, have a huge hole in their back to allow for the screw to secure their torso halves. The O-Rings do dry-rot over time, it's inevitable (all rubber materials deteorate quicker than plastics). The waist joint is often more visible than on Star Wars figures (sometimes it sits well and tight so it hides the articulation enough but sometimes it doesn't).
I haven't ever known anyone to t hink that the GIJ articulation was really "pretty" compared to what Star Wars has in its line... That's mostly because GIJ was a toy line based on articulation over aesthetic appeal while Star Wars has changed over its modern line in an attempt ot find balance... At first the line was aimed squarely at kids, but slowly Hasbro realized kids don't sustain a toy line like this forever so the line changed for a more "realistic" look... Then over time articulation was increased here and there, but keeping the figure appealing looking has always been an issue that Hasbro has faced. In recent years they've adopted a lot of ball/socket articulation, injection molding is routine, and they've been able to put out a highly realistically sculpted figure that also sports a lot of articulation (when they want to give it a lot of articulation). They could still improve the line standard I believe... A lot of the Collection 1 figures for the ROTS line, for instance, could've used knee joints but didn't get them (Mace Windu, etc.). However, I would say that they've made great strides. I just hope they keep at least the Royal Guard's articulation as the bare minimum for army builders, "action" oriented figures, and main characters... Be nice if it was kept to aliens and background collector-ish figures too, however Senators and the like just don't need the articulation, nor can many support that level of articulation unless cloth robes are used.
I think GIJ's are cool... I think they do some really neat things with that line... But I think it'd make for some ugly figures in the SW line. I just hope Hasbro keeps their current attitude towards articulation and maintains these improvements over the line's life post-films... I fear a regression, especially with seeing figures like the Wookiee #2, Neimodian Gunner, and Bacara, who all have less articulation than I'd have liked to see.