why?
-"artificial competition for jobs would decrease drastically"
why is artificial competition important? You are saying that it will be easier for qualified people to get jobs because unqualified people won't bother to apply any more?
http://en.wikipedia.org/wiki/Reserve_army_of_labour
Artificial competition going away is important, because it reduces the "fake" demand for positions; those that would rather not be there won't, which takes the pressure off that position (reducing its perceived scarcity/value.) This has both the above-described wage effects, and a cultural effect: you no longer have people pretending that they want a job, lying to get jobs, inflating their resumes, gladhanding, etc. You're only there if you want to be.
Also, if inflation stayed in hand, the basic income itself would look an awful lot like a raise.