The summary says it all: Could we have the same graph-over-time display for memory load, disk I/O and network traffic?
There is already systemload, diskperf, or netload. They don't behave identically to cpugraph, but they get you most of the information you'd usually want. I agree that the situation would be better if all this was unified, to take the best of all the plugins I mentioned. I actually have/had some kind of grand plan for the next generation monitors/graphs, but a severe lack of free time is currently in the way, so I don't expect this to happen any time soon.
I have systemload, diskperf, and netload running, but they only show the load at the current moment. I'd like to see what the load during the last few minutes was, because I can't watch them all the time. Besides, compared to the others, systemload consumes too much CPU...
I agree with you, and if I get enough time, I'd like to work on that. But currently, I don't, and I don't know when I will.
Mass-reassign all bugs from florian@ to goodies-dev@, thanks for the maintenance work! (and sorry for the bugmail spam..)
If you want the systemload, diskperf and netload plugin to improve, please file issues against them, not against cpugraph.