Cannot help you with the seats but if it is any use the Countryman S E All4 PHEV I had on loan in November 2017 (and was not the latest 2018 spec) had the puddle lights that project the Mini logo down and they were standard fit in 2017. Compared to the puddle lights on all my Range Rovers since 2010 though they are small and quite weak lamps and really don’t do the job that they are meant to so you might find them a bit disappointing - possibly more powerful LED’s in the lamp holders and a bigger footprint for the lights would fix that.