So I've now borrowed the RX8 in question for a month, to see how I get on with it. He's done a couple of maintenance related mods so far (separate oil res for the 2-stroke rather than using sump oil for one), but other than it's stock still. Well, apart from the decat...
Still love the howl from the engine, and the pop from the exhaust as you shift up a smidge before the redline at WOT is hysterical! Very impressed with the suspension too: It handles some dire speed humps near me better than anything I've ever driven before. Too soft for my personal preference, but for the masses it's ideal for comfort.
Updates as I go.