Publishing an almost trivial paper to arxiv My question is simple:

Should I publish a paper on arxiv if the result is almost trivial or just an analysis of the known results with a new question in mind? Other than the main question I am answering (which could lead to some extensions) there does not seem to be an interesting idea.
Since you think of the work as trivial there is only one reason I can think of for publishing it. If, for some reason you need to make a reference to the material it contains, then it might be useful to have it in a public repository. Of course, you could, in most cases, make reference to the source material instead, or simply incorporate the work into something more significant. But if, for example, you want to void the problem of cross referencing between other papers this might be a good idea. 

Otherwise, it might be better to sit on the result until you have something of substance.