Sorry about the OCD trigger.
The MRA is part of the hidden tutorial that teaches you that you can lose a skill if you craft it away. That would have been more significant late-game, but the challenge of balancing while preventing a locked game was more than I could handle for this short game. So it ended up less of a puzzle than I intended, but no one should ever be locked out by missing skills.
Thanks for playing! I'll be more careful with balance in the future.