When it comes to basic research many people I know did not pursue it because it is ought to pay you less. So it may motivate some of those people

But the monetary incentives are not sufficient to pay salaries. And the little extras make no differences, especially when the cons are put into the equation (no peer-review, no recognized journal, etc.).

Then I think reporting negative data, reporting non reproducibility of some published experiments, data manipulation and plagiarism should be strongly demotivated

I have writing for years papers on null results. This is something well accepted in particle physics. Papers on unconfirmed excesses are also being written, and results not reproducing former experimental results are also published. I think this is a community-thing where scientists should just also consider negative results and things like that (from which we actually learn a lot).