You do have to play the markets in terms of States/Neighborhoods.

Yes it helps but there are other factors that play a lot more into it

Detroit is not a market to play around in without a professional on your side.Remember: cheaper doesn't mean you'll make more money.Start by going to www.narpm.org to search their directory of managers.

All of the risks of "subject to" then come into play (with a "wrap"); read this thread:http://www.biggerpockets.com/forums/83/topics/86029-subject-2-protection-from-calling-mortgage-due

I get that this is probably a post to engage in conversations.... but I will play this game.

Thus it becomes a "location" question, is yours visible and accessible.These National companies are playing the Average of numbers game. 

It's a long-term appreciation play usually.

Do market conditions, taxes, or potential rental income play a big role for you?

With less demand, sellers may be more motivated to offload properties, especially those facing higher holding costs due to rising interest rates.Also, the election season plays a major role with what's going on. 

I am not trying to be rude, but if you find a partner that has good deal flow, good access to capital and experience, what role do you play?