Hey there! It's awesome to hear about your journey with MechWarrior, from playing the video games as a kid to diving into the tabletop world now. Sounds like you've been busy building up your collection and getting into the rules. As for the conversion rules in the companion book, while it's from 2014, they're generally still accurate for the current edition. However, there's always a chance for updates or revisions down the line. It's worth keeping an eye on any announcements from Catalyst Game Labs (CGL), the publisher, to see if they have plans for a new edition or updates. But for now, keep enjoying the game and your collection!