I think it would be suitable for some gamemodes like survival, creative, skyvlock, skygrind, etc. And thanks for the feedback.
But I mean the perk can be activated and deactivated, just if you want to have them on you would. It wouldn't cause problems with invisibility.
I support, its laggy for some users but why not add a command that toggles if you see others trails or not for example /particle on will show the trails and /particle off will disable them this would only be for you and not disable what others see tho. This might be hard to program in but if you know how to its fairly easy to program in commands like that, i've done it.