There are recurrent request for Arduxxx updates. It is always possible to follow the wiki (how to install a custom build), but when a stable version of software is available we are curious and want to install it the easy way.
I shared my “HowTo” in the forum but I think it could be integrated in EmlidTool.
Regarding ArduSub integration: Edge part of EmlidTool can setup ArduSub. Can you extend it to Navio users.