A console would be a bad idea right now. The market cannot sustain Microsoft, Sony, Nintendo and Sega, along with the PC. If MS ever dropped it, or Sony ran out of cash, then worth a look again.
A handheld, however, may be worth looking at. Nintendo has sold 35 million 3DS units, with 2 brand new models on their way out. The idea that hand held gaming is dead is silly. Sony screwed up both of their handhelds though, and I cannot see a third. May be an opening.