@tiwane I have noticed this too in other topics on annotations. In particular for me, the phenology graphs show pattern of date and state, but if the observation is for sign, then the date and state are not neccesarily matching.
As an example, I could make an observation of an eggshell in a nest. The concensus in the forum seems to be “mark it as egg” regardless of what time of year you observe it. But if that bird only nests in December/January, then it massively impacts the phenology graph to show eggs through out the year.
A possible option would be to have a “live organism present at time of observation” DQA, set by default to yes, which we can toggle if it is sign. Then that DQA can be used to filter out observations from the phenology graphs. This wording of course is just for example.
There was an element of “it only mucks up the graphs a little bit, and people are aware of it” from some forum members, so I guess it comes down to whether “imperfect is perfectly fine for the situation” :)