Honestly really love a lot of the mech designs and module choices. I do think this is a really cool TTRPG concept especially with how easy it is to get up and go with just 2D6 and some circles for tracks. I like that is very adventure focused and more story telling and world building. I think the provided examples for the different systems are pretty great and I honestly would like to run a game of this with some friends if they were interested! Sif 11 feels very hostile and I like the general vibe.
I think the rough 50/50 success rate makes it pretty difficult but that fits the theme and I like the idea of you being able to shed off those damaged modules for new ones. I think that helps balance it out where you don't feel totally lost if your current objective causes a ton of harm to modules and wears down your passive abilities.