I would love to get an M&P 40 as well as a 9. Then get back a .45 and get me a 1911. I think I am deciding to part ways with my .380 and all my ammo if anyone is looking for a PK380 and a bucket of ammo (as well as reloading supplies) for a trade for one of the above mentioned
Since the late 1960's I've wanted a Beretta Silver Snipe over under 12 gauge but never made that happen. A few years ago, I updated that wish list to a Browning Citori 12 gauge O&U double. Being retired now, it's probably not going to happen, either. It's nice to have a dream, though!
About the only thing that's really on the list is that Glock 41: been waiting for that..
Beyond that, the usual suspects I've been after for years:
Browning 625
Browning O/U in .410
Whatever 1911 yanks my chain
Smith 629
Python
Anschutz .22
.357/.38 or .45/.454 lever rifle