They were changed about 1 month ago because in the previous set I couldn't find representative icons for all the different features / needs of NCS.
Anyway, if you want to suggest a new icon set then feel free to submit an icon set (maybe start by the 20 icons visible by in this top bar / context menu).
I see 2 topics here, one is the icons itself on which I could consider to change if you have something concrete to suggest.
If it's the case then I can provide you the current set (with naming convention and sizes) and my direct email address so that we further work on this together if you manage to convince me.
The rest, regarding placement / customization is not going to be considered at this stage (essentially for technical reasons). Requests like moving screen under settings is quite delicate considering how netcam studio is designed and that we already share these components between netcam studio x and client.
Also things like the connected users will never go under settings, since:
1) it's not a setting
2) it's important and needs to be quickly available if you use netcam studio to stream on your webpage
Same for generate html, i agree it's not a feature you use every day but still it's not a setting. The only area which potentially could be grouped in the notification / sync settings
Another thing, I'm not going to pay for custom icons development. I have no problem with buying sets of existing icons if it's required but for this (we speak about 80 icons), but custom design for icons is not an option.