The PS4 launched in 2013 and was profitable from day one so I think it could easily be more powerful than PS4 if it released in 2017. 

Why you think it will be uninteresting console?

For me it's always easier to buy affordable than not affordable console. :)

If they make a console less powerful and less feature complete so that it can be cheaper, then it will be uninteresting to me at 200 than it would if they made a much more powerful and feature landed box at 500. Given the choice, I will buy the expensive one, but probably won't bother with the cheap one.

The PS4 released at $400. In 2016/2017 it will probably retail for more that $200 (the guideline stipulated by the OP.) With inflation, this difference is slightly more pronounced. I can't see them making a profitable console for $200 that is more powerful than the PS4 in 2016/2017.

Well Wii was less powerful and affordable console and wide opinion is that was very interesting console. But it seem you want a power house from next Nintendo console..

I think it wouldnt be even stronger than the wiiu, it would be a little bit weaker

Not really, look at the games on the vita they look better than top of the line smartphones. The vita has 4 GPU processors

I started with the atari and moved to the nes then snes went to sega for awhile then ps1, ps2, xbox 360-PS3-Wii
now my gf has the Wii U and I have gone totally to pc but I play the Wii U with her once in awhile. While I love nintendo as a kid as many do rightly so they need to learn to make more mature games that hold on to us kids as we grow old I can tell you after 30 years of mario I am defiantly burnt out on the likes, I know i know everyone loves mario yes i did as a kid but now that I am 35 I want more than just mario, zelda, samus I am older I have a job which means more money to buy games with and 1 or 2 games a year is just not enough for me they really need to nail down more 3rd party content or make more games that focus on us older people who have the money they want I would love to dump money on new games for my gf's Wii U but it doesn't have any games they center too much on only kids games (lets be honest here they say family friendly but how often do you see your parents jump into a game with you and have as much fun as the kid does?) so to sum up my wall of text because it's super late here and I am tired they need more 3rd party content and they need to focus on servicing the old crowd not just the kids who then grow up and want the AKA big boy toys know what I mean?

That is what I been saying. They have lost the adults. They need ot start retaining the kids when they turn to teens. That is how they will grow their size again with core gamers and then be able to increase 3rd party game sales..

That depends of what is, if it is a home console definitely much more stronger than Wii U, if it is a some hybrid device probably little stronger than WiiU, if it is a handheld probably weaker than Wii U.