I think that if someone dropped a load of money on me (and my wife didn't find out ;-) I think I'd buy more gear without thinking as hard about it because I wouldn't have to wait for budget to reach the level of the expense.

Also, I think I'd get more 'experimental' gear because being disappointed in gear hurts more if it costs a lot.

If I had a load of cash, I'd grab a Patagucci Houdini jacket, a Jacks R Better quilt and some kind of elephant's foot sleeping bag and a hooded down jacket and... and... and... all just to try out different configurations.