Nah, the MS version should be a stand-alone package like the Sport backage was on my 370Z. You could get it at any trim level. It's suspension and brakes and rims and tires and diffs and the like. Should be independent of what's in the interior.
That..make mine an ms sport w/cloth heated seats on lightweight 188s, paddles, bose. Don't think I'd miss much else. Call it cx5 ms ultimate sport value super budget edition for all i give a crap @32 Im sold.