For example Hyperbola Gnu/Linux-libre has web browser Iceweasel-UXP with few forked addons like noscript or ublock and it's simply amazing web browser...

1) It does consume almost no bandwidth at all... Every website is loaded with blocked scripts/no ads but they're also available to display normally... (compared to newest gnu icecat browsers that makes all websites look like trash) Blocked cookies by default... If you wish to unlock some script one click and then website reloads and done...
It is like freedom to browse web as you wish...

2) It has firefox 52 layout

3) noscript addon displays every java script script some certain website has... If you want to use cookies and unlock google stuff/solve captchas, you're free to go/or unlock every javascript stuff/data mining website it is possible but not set by default...

One week of web browsing and there aren't any single google cookies, which is hard to achieve on modern browsers...

That is the reason why i decided to stick with Hyperbola not Obarun, because Iceweasel-UXP is missed so much... This web browser is very neat... Gives ultimate control over what is displayed when you browse the web!!!!
I really encourage to try it out and experience for yourself :-)
https://wiki.hyperbola.info/doku.php?id=en:project:iceweasel-uxp
https://wiki.hyperbola.info/doku.php?id=en:project:iceweasel-uxp_addons

PS. This is not advertisement, it is simply something like the best browser i have ever used, ever...