Just like we have a notification for FA, knowing whoever opened the chest and got us to next round,
I'm sure we could avoid some angst that way... we got a tournament going to 10 chest "early" and we can't figure out for sure whoever used the archive. Instead of suspicion all around, transparency would be best, like for FAs...
You have way better transparency if you actually do your best to use the archive early. Any points over a chest automatically get put back into the archive so the issue you are implying is a non-issue. The only time it would be an issue is if you don't make 10 chests are you are trying to accumulated extra tournament points from more than one week, so say you make it to chest 8 with extra points, and you end up with enough points to take chest 9, but your plan is to get 10 chests the following week. Well, then someone spent your archive in a way that it can't be used for that week because you got 9 chests instead of 8 and drained the archive instead of building it higher. But spending the archive early on the 10th chest doesn't cost you anything as points over will be added back to what's in the archive.
By spending the archive early, everyone can see what's needed for the next chest without having to do calculations, and you can see if you are close and encourage players to push for the next chest, or you are well within what you can save.
On live we had a difference in opinion on spending the archive and my position was that it makes it difficult for the FS members to know if they are close to the next chest or not. So we decided to wait on using it. I was busy that Saturday and was on only 10 minutes before the tournament was over and it looked like we still had about 10k to go, but with our hidden archive, it was less than 2500 points. My FS is pretty reliable to not let a chest go for 2500 points and there was no response in the chat. We got it to 600 left before the tournament ended and there is no question in my mind that the lack of transparency from not emptying the archive on our true status is why my FS did let a chest go for so few tournament points.
This seems more a misunderstanding that spending that archive cost you something when it didn't.