I would not tell them there were legal changes and that the new lease will benefit them to induce them to sign unless you are sure of your facts.In some states a judge at an eviction would not take kindly to hearing such stories.

You COULD go with a power vent water heater, but that adds a few hundred dollars to the initial cost and the inducer may very well kick the bucket before the tank rusts out.

Falling in love with a property or having self-induced pressure to close a (any) deal can be destructive.

You plan on immediately raising rents, but what about the turnover that you might induce?

This is a good primer on the topic of "fraudulent inducement" referenced in other bigger pockets blog articles. 

OR, if they say that it's definitely tenant induced and due to nastiness then I'd skip straight to making them pay for it. 

That's a horrible ulcer-inducing combination.

Because I DON'T have enough cash to buy all of them, I refuse to lie to the sellers and raise their hopes, and there is a legal aspect called FRAUD BY INDUCEMENT. 

Account Closed  I've actually gone thru this process with a tenant induced fire in an upper unit and water damage to the lower.The insurance co made a settlement with ME. 

I call it 'Inflation Induced Debt Destruction' and it's the ultimate hidden wealth creator!