"I don't think the DS is an indication, it's just a continuation of the support they had for the GBA. Doesn't seem like that'll carry over to their home console business, though."
I guess we'll see when the Revolution has been out for a while. The parallel I see is that both DS and Revolution try to buck the trend compared to other more powerful and traditional consoles. Traditional GBA support could just as easily have continued on the PSP instead, without going through all that dual/touch screen hassle. In fact the PSP is much more a GBA 2 than the DS is... only difference is that it isn't made by Nintendo, which may or may not have been a deciding factor for third party support.
"There are more microgames to epics, which doesn't look like a balance to me (even looking strictly at Nintendo)."
Okay, I'm not getting this at all. Let's look strictly at Nintendo. I can't think of any Nintendo Cube microgames that came out recently. I'm trying to recall what Nintendo's done the past few months... SFA, Geist, Battalion Wars, Fire Emblem and DDR Mario are the only games that come to mind. Surely DDR Mario doesn't outbalance the others?
And looking at the future, only big Nintendo Cube game coming out is Zelda, presumably because they're focusing on the Revolution now. And Mario Strikers, but that's a sports game. Maybe Mario Party 7?
I don't see the balance issue. Seems to me your problem is with quantity, not balance. Nintendo can't produce quantity all by themselves, hence your problem is strictly third party.