The lack of a good 4 drop is an interesting point. Skraar's young is a solid card for 4, as is Matriarch, who I usually run in command. But as often as not, I end up PLAYING Matriarch from command on 4 resources, to get an extra 10 damage hit on the fortress, or occasionally to unexpectedly kill a good target of opportunity. However, that completely negates the whole point of running her as a commander, which is to get the benefit of her ability while saving those 4 resources. An interesting conundrum.
Warpath is hampered even more by the lack of a good 1st turn 1 drop. Hulking Sniper is a fantastic card, but I will very seldom play it on turn 1. If I don't think I'll be facing many flyers, it's an ok play just as a generic 4/4 beast. If there's a key flyer commander, it's an ok play, but even there you are usually just saving your opponent from having to spend resources on that commander. The original Xi is about the best target, but who runs her when her 10 health Ascended version is available (and out of sniper range)? That, using Caretaker, or dropping a lucky Noble are their ONLY viable 1st turn plays, which needs to change.