I don't get the whole "this sequel is terrible, it shouldn't have been made!" thing. You don't have to watch it. The fact it's been made doesn't affect the original in any way whatsoever. Chill out.
You obviously don't have a 10 year old son whose appreciation for Star Wars or Indiana Jones has been irreparably damaged by his having watched what should have never been a 4th installment in the franchise before seeing the original.
Besides, there's an outside chance it could be really good. The Bladerunner idea is a great starting point.
Let me tell you about my mother...
Disclaimer: "These opinions are my own, though for a small fee they be yours too." -- Dave Haynie