I have noticed that recently some of the badges that are given in a contest show the actual position you finished in the contest, even if you are not on the top three. This is actually nice, but I feel like that number gives little information about how you did at the contest: there's not much point in showing that you finished 20th in some contest without knowing how many people participated in that contest.
It's not the same finishing 12/12 (the last) in a HLDC, for example, as finishing 12/144 in a VLDC, nearing top 10. So, I think it would be nice if those badges also showed how many people participated in that particular contest. I think it would be something more or less easy to implement.
The positions on the hover text are fairly recent, but we actually revisited as many contests as possible over the last 10+ to add these into participant trophies where the data was available. With that, you're looking at a rough estimate of a couple of thousand trophies of trophies that would need to be edited to incorporate the idea.
We're not ruling out the idea as something we could do down the line, but right now it's not currently feasible due to the time it would take to edit the amount of trophies that have been awarded.