Everything is great and works as advertised, but it could use a lazy load option(maybe even for specific tabs)

Works just fine, you just need to save the pins through the addon menu.

Can't seem to be able to edit the saved addresses however, need to add new ones and replace them manually for the old ones.

1. when open a new window, it is not pinned
2. restart firefox and there will be two pinned tab, restart again and there will be three and so on

besides the two problem, everything is fine

Allows you to choose persistently pinned tabs while still clearing history on exit, which is exactly what I wanted. These tabs do load on launch, however, and if somehow they could be lazily loaded so as not to slow Firefox's launch when they will not be immediately used, that would be an appreciated feature.