Aye a few extra gauges wouldn't go wrong provided they were original Volvo accessories....suppose these things turn up now and again. I am surprised the GLT doesn't have more gauges as standard...
Louvre - acquired taste, if one came up it would be rude not to give it a go but I know they are a rare and sought after add on.
A set of Leo wheels are on the wanted list, keeping an eye on all the usual selling sites. There is a nice set of refurbed standard GLT alloys on Ebay at the moment if anyone is needing a set (not mine just commenting).
Cheers Dave