Alrighty - (on C4) fixed the river systems as much as I could. I made sure the mountain-based streams feeding the lower rivers start as dark blue (fast water). I also tweaked the merging and tributary junctions so they provide more obvious direction of the flow. The canyons are tricky, but that's the way the originals were drawn... I also took off all the FX on the ridgelines which helped clean things up too. I attached a new version in the above post and got rid of the first. I also left the ridgelines OFF of this version because... I hate 'em.

Think that the changes will work better? Seems like it to me.

Will rework B5 tomorrow.