One of the primary reasons I actually came to the Solomons five years ago was to dive the USS Aaron Ward. Still haven't done it! Logistics have fallen through, or we've been too busy when it would have been easy, etc. Really have to do something about that.
There's also, apparently, a sinkhole that may lead, a couple of miles from the dive shop. It's entirely possible there's an entire cave system. Haven't explored it yet, as access issues are just too much of a headache - the family who claim the land the sinkhole is on (land here is held by customary right, rather than by deed, so it can be hard to work out who has the right to what) seem to think it's full of Japanese gold and we're going to steal it. Ho hum.
And there's a plane wreck I know the approximate position of, in around 25m of water - it's probably either a G4M 'Betty' or a Ki-21 'Sally'. Just can't seem to get around to filling doubles and a stage with 32%, slinging an O2 deco and spending 90 minutes doing search patterns! We did find a P39 Airacobra on our first search attempt a year ago, though, so it's not all bad...
That's the local stuff I keep failing to do. Now, if the OP lets us have bucket lists, there's Bikini, HMS Hermes, the Prince of Wales and the Repulse... Endless.