I had a situation that I was involved in (fortunately, not in my own property) where the tenancy was obtained through fraud. All of the information provided on the application (other than the tenant`s name) was false and the references were confederates. Rent cheques regularly bounced. The tenant was charged with Obtain Accomodation by Fraud under the Criminal Code for both this and his previous tenancy, from which he was evicted for the exact same things.
You would think that a situation like this should be a slam-dunk for the Landlord & Tenant Board to decide to terminate the lease. But instead, they took the position that the tenant obtained his tenancy because the landlord failed to do proper due diligence. There is no provision in the Residential Tenancies Act to terminate a lease based on fraud, or even failing to live up to the terms of the lease (other than paying rent). So the landlord had to proceed under one of the existing grounds for termination, in this case, non-payment.
The lesson: do a thorough check of your applicants and above all, visit the place they say they are living now.
By the way, what changes to the RTA are you advocating?