I have 75 right now 
i have everything i want for every hero.
I wish they would do something for high lvl players because basically i only open loot boxes near events to get coins to buy the stuff i want
Ps
Just opened an archives loot box and got orissas puppy victory post and its glitched and it looks and sounds like she eating the puppy’s butt 
700 on this account, 1100 on my main. I honestly forget about being able to change skins at the start of a match, Ive never cared about cosmetics, though I have a few I enjoy.
Maybe like 200? I don’t even know at this point.
None. I had like 40, but with Sigma being released soon I don’t really want to dig through the piles of dupes to get to the new stuff, so I did it before it was too late.
200 ish on 3 diff accounts but i did like 80 open
I also have everything.
I just open them and collect cash.
If needed at the end of events, i use the cash to buy the things i don’t have yet.
(when i cant play much and cant collect them by normal playing)
None, I see no reasons to not open them right away.