As someone who loves Minecraft and the IC mod, coming back to a setup after 6 months of not playing, to set my server back up and reimport my world, only to have significant chunks of IC broken with the live version (jetpacks, scaffolding, misc. quantum suit issues), I'm pretty disheartened and frustrated.
For all the cool things being added to IC, it really feels like a "fix one thing, break two more" situation.
And hell this is part of dev and I'm fine if they break more then they fix being someone who is willing take the time to help test a nightly build and report the bugs in an organized fashion like an excel sheet. But not to actually release it like it was. That was just a slap to the fans of IC and to the IC Devs as I'm sure they were embarrassed by the release.