There were a few opportunities in Louis XIV's reign.
I read once that Turenne was disappointed that peace was signed with Spain in 1659, as he was convinced the Spanish forces were on the verge of collapse and one more campaign would have conquered the Spanish Netherlands, or at least more of them instead of just Artois. Problem was, France was out of money and couldn't afford to keep the war going.
Louis XIV then approached the Dutch Republic with the idea of a joint invasion of the Spanish Netherlands and partition of them afterwards. The Dutch, however, became uneasy at the idea of sharing a border with France and relations between the two broke down. I think an interesting POD would be to have the Franco-Dutch alliance survive. (I think both nations could have benefited from its continuation.) This would make the War of Devolution much more decisive; France wouldn't need to give back its conquests since there would be no Triple Alliance arranged against it. So France could have gotten most of the Spanish Netherlands in 1668.
As mentioned, there was the rejected peace proposal in 1672, which would have given France some southern Dutch territory and all but guaranteed the future conquest of the Spanish Netherlands, but Louis held out for more and ended up losing all of that (though he did gain some Spanish territory).
And maybe, if Charles II of Spain had died earlier (everyone was surprised he lived as long as he did), there could be some alternate treaty that gave the territory to France, as compensation for the throne of Spain going to someone other than Philip.