That would be less extreme than mine of an outright ban. I can see just setting up strict guidelines as being a viable long term option, it probably would even work better if no other legislation was passed effecting residential property during a long period of time, however I believe drastic action needs to take place to try and quickly restore the middle class. With my idea of a ban on foreign investors and a cap on corporate investors we could have it expire after 2-4 years for just the short time of trying for an immediate fix, and then instead of renewing it, we would set up those strict guidelines but allowing foreign investors back into the residential market as the long term plan.