I guess it all depends on what you use it for... as a personal keyboard monitor, it seems about perfect, the stereo issue is not so critical when it's just you listening. As a main backline amp, it might be a bit more important, but if you are serious about stereo, you probably already have a PA set up that way, and DI the arranger, so it's back to personal monitor use....

One thing I definitely approve of for organ amplification is the fact that left and right ARE close together... You know, just like a Leslie (separation between horn left and right positions is less than three feet). I have mentioned this before, but I consider most Leslie sims in arrangers and WS's to be fatally flawed, because they usually are hard panned left and right with no way to collapse the stereo WITHIN the mix. You want separation on effects and some sounds, but the sound of a thirty foot wide Leslie speaker is unrealistic!

Does the Nord C1 have a 'width' parameter on the Leslie sim? If you are DI-ing into a PA in stereo, it might help things out to narrow it... but if you go to the Traynor, full width would probably be best.

In all fairness, I don't believe I have ever heard a keyboard combo amp that was as flat as a PA should be. They all tend to emphasize mid-range, to help cut through in a stage monitor role (what they are really designed for).