I have never seen so much hoopla about a mCCR (or eCCR for that matter). Big whop, its got a crapload on onboard "backgas" bailout and a proverbial switch block to plug in additional gases (including the required O2). Yes you can donate a long hose off of it like off the old fridge pSCR and RB80s instead of doing bottles switches under duress. Yes its a mCCR to avoid putting all of your loop ppO2 eggs into a electronic basket. Are any of these things earth scattering? Nope they all already exist in one form of another on existing SCR or mCCR units.