[@Beloss] Regarding the seriousness of F/GO, the actual storyline is really dang serious though bar Camelot (who only had a few of them) they usually have comedic elements occasionally, coming from the interaction between the different Servant personalities but these comedic moments were only serving as breaks from the tension of the story for the most part. 

Event though, on the other hand, is full-on wacky. All in all it strikes a nice balance between the two, but since we get more events than storyline updates, it looks like F/GO's story isn't serious.