Enabling insiders means MS will track a bunch of data about you besides anonymous metrics and you can't opt out of it because insiders requests that info.

WSL v2 and / or that terminal sounds good but it may not be until Oct 2019 or Apr 2020 before the stable Windows channel sees it. They tend to release 2 major updates a year and if WSL v2 is only being released in June 2019 for insiders it's quite the push to have it ready by Oct 2019 for stable.