This is a very common issue facing many investors. 

With regards to the structural issues and really any other noticeable property defects, if something is visible and obvious on the initial viewing then you should not expect additional price reduction after inspection. 

You should also spend time at your local LTB hearing to get a better picture of how the board interprets the RTA and how landlords are treated.The most important advice is never waste a single day hesitating to issue LTB notices but make sure you do it right.

And big money has taken notice.

How can they not notice, unless they just don't care.

Your experience underscores the importance of me communicating with my cleaning staff regarding photographing any damages they notice, and making sure I have proper documentation for all services (which is not only beneficial for potential claims, but also for tax time!).  

I gave them a notice to terminate with a one month grace period which would expire 11/30/2017, i also sent out the document to Section 8 to keep them in the loop.On the first of this month i got rent from section 8 for the month of November.

What is our best recourse for a tenant that just vacates a rental with no notice?

It is a college town and partying is very common.

However, if the tenant sues for any violation of the RLTO, section (e) goes on to state that the "well-known company" remains:"jointly and severally liable with the successor landlord to the tenant for such security deposit or prepaid rent, unless and until such transferor transfers said security deposit or prepaid rent to the successor landlord and provides notice, in writing, to the tenant of such transfer of said security deposit or prepaid rent, specifying the name, business address and business telephone number of the successor landlord or his agent within ten days of said transfer."