>>> we are already falling behind OS4 in graphics support

>> Didn't that happen like 7 years ago? :-)

> Nope. I've yet to see benchmarks in actual programs beat my X1950 in my G5.

Graphics benchmark results for Warp3D Nova, OpenGL ES 2 and GL4ES on GCN1 or GCN4 cards are being posted to sites like amigans.net all the time. You just need to take them on with your G5/X1950 combo (and take care to not inadvertently make this a CPU performance comparison instead). It's because you haven't been looking that you've yet to see them.
In general, "better graphics support" can mean several things, among them:
1. drivers for more modern graphics cards: that's what I was referring to
2. a more modern 3D API using modern GPU features: that's where OS4 got ahead of MorphOS with Warp3D Nova and OpenGL ES 2
3. better performance: that's what you are referring to (true or not)