The red dot finder is a standard among budget telescopes and works well. But with optics as bad as Meade Polaris 127’s, there won’t be much need for it.
The focuser and other accessories that come with the telescope are the same as Meade Polaris 130 and they are OK. But as said before if the optical tube itself is garbage, you can’t really save the telescope with anything. Even the most expensive eyepiece won’t give you a good view with Meade Polaris 127.