I use a pro , and have read some books but long term strategy and planning is something i always need to try and brush up on. 

It can be difficult for the agent and later the home inspector to check the roof - chimney, flashings, valleys: I sometimes use my windshield brush to clean the edge, so at least I can see the condition and age of the shingles.On the other hand, you can spot houses with poor insulation from your car driving down the street.

But to paint Detroit with a broad brush because you haven't done your due diligence with the numbers or statistics is a mistake on your part.

It's more than just slapping some paint on a brush or roller and throwing it around).2.  

I would buy the paint so that I control the color and the brand/quality, tenant would supply the brushes, rollers, etc. 

Could I go out, buy paint, rollers, drop cloths, tape, brushes and find some old clothes to paint a showcase house with just a couple extra runs, a few extra soft spots and some not quite as good lines as a pro in about 215% of the time?

Big signal to me...I think you're painting the picture with a broad brush.

That way you brush out the players and keep them honest.

I typically clean out the vents using a 12' brush from the inside of each unit in my small multis. 

@Luke Harris  I grew up in this industry.. as such I am without being too forward and expert at it.I don't like selling worthless land to suckers.. and that is what most of these programs are based on.are there some gems  for sure.. have I bought and sold land  YES by the hundreds if not thousands.will I sell worthless High Desert sage brush land to unsuspecting folks NO.