I have to say that in my opinion even trivial events should be logged and noted, even if not a full MOR raised.
I know there is software which airlines use to do exactly this sort of thing (just within thier ops department...the CAA don't ever need to see it), I don't want to be seen to advertise so email me if you want the company I have first hand experience with.
After all, even minor/trivial events can team up, cause a chain reaction and ultimately cause a big problem, so sorting out the minor niggles improves safety.
After all, if the fuel guy regularly scrawls on his load sheet the numbers and are hard to read...and the taf is incorrect, if there is ever an a/c which runs out of fuel because he was holding with low VFR fuel at a destination which is IFR. You have something to go back on...and as pilots say..."We'll we've reported incorrect tafs and cr*p illegible load sheets in the past...it was xyz who actioned/ignored it"