I was in the same case before this thread as I wasn't paying attention to it and was hitting boss with my best squad. So I'm not writing this thread is bad or else as I find it more than welcome.
But I don't see the utility to post picks with other players names, because it's simply free "flame" and add nothing usefull: "oh look this one is a noob hitting boss with full attack". And no, it won't help the player to understand because he just has to read the first posts to do it. For myself I wouldn't like to see my name randomly pop, because I made a missclick ^^
Now if you want to give an example, just hide the name by editing with paint or else, just to respect others. Because they may have missclicked on this boss, may not be aware of it like we were or simply just enjoy the game this way. And this has no utility here expect creating drama ^^
Now I really think adding a in-game chat or a mail box at least could be great and usefull for the community. Not everyone take time to check the forum, and to be honest I don't know how I randomly find harem-battle club in the first time ^^
Edit: thanks mystic