Win or lose on this presentation I will walk away with more education from my experience. 

Yes, you will get your $$$ back if you do not win the bid.

They have zero knowledge the local players, city officials, etc that all have a massive impact on any RE business.

What are the key components/players that make up your "Dream Team?"

Only when they get a new QB and the Cowboys actually win a Super Bowl:)

But if my options for investing my $10M lottery winnings (after taxes of course) were to put it into on investment that earned a decent return or thousands of smaller investments that earn great returns, I'd probably go for the single investment for the sake of simplicity (think management, taxes, liability, etc).  

That is a great picture to take to your property tax Appraisal Review Board hearing - you are guaranteed to win your protest!

One that I have no way of looking inside and estimate repair cost, two I am not sure if there will be other parties coming after me if I win the auction， three I don't know if I can get the people out without them tearing down the house...

If your end buyer is a rehabber, make sure to thoroughly analyze your properties so that it’s a win-win for both you and the rehabber.

It should be a win-win for all parties concerned.