The only thing I wish it had is in Intel processor. But, PowerPC works fine. I just want Intel for running Chrome and/or Firefox (The new one, 4?). I'm still on Firefox 3.
Have you looked into TenFourFox? It'll even run on G3s running Tiger... and from my experiences, I can say, from experience, that it should run beautifully on a dual 1.8 G5.