At the very least, it skews peoples' motivations for work. I.e. Do nothing and get 1500, or work as a low-wage say woodcutter/garbage man, and get 1600. You're effectively doing a shitty 9-5 job so you can get 100 (or whatever $X) more than the guy next door doing nothing all day.

People say that's liberating and "equality" for all, buy I say it's completely the opposite and directly unfair to a lot of people.

And now that I re-read your post about it being an inflationary scenario, it makes more sense. All of a sudden, you have a reduction in individuals willing to do hard/hateful labor for a small amount more than basic income. This reduces their supply, and thus the salaries go up. Essentially, it sounds like it would make 1500 the new 0 as you put it. Not sure where to follow that train of thought further, though.

Anyone care to continue it from there?