Nin Herzog Zwei was freaking awsome. There was also another RTS on the Genesis I think it was called Warsong (could be wrong).
I think the barrier to entry was lower back in them days for consoles devs. Just like now the barrier to entry is alot lower for PC game Devs. I think most of the best concepts have come on the PC because of this. Thats not to say that some of best games/concepts (Herzog Zwei) dont/wont come from console devs. But I think the costs of doing console games is going alot more then doing PC games.