I think splendor gets more interesting if your opponents are also trying to be strategic. You can see what color chips they are picking up, which lets you know what they are aiming for, which influences what card you want to aim for or reserve. Mid game, you can see what colors other people are missing and try to corner colors to give you room to breath and pick up cards. You can also see the set of colors people are holding to see which of the 4 final bonus point cards are being fought over.
I like the game for what it is. I'd say, surprisingly strategic.
(At the same time that probably makes it a good choice for a game implementation)
Thing is that for all my examples above I had a "good" reason to implement that specific game:
1. Dominion (shortly after it came out) To evaluate strategies to best my friends (obviously). 2. Eclipse Has a nice rock-paper-scissors type of ship combat, where you can counter every enemy build (if you have enough time and resources). Calculating the odds of winning would be interesting. 3. Homeworlds Seems to be a very fascinating game. But without any players to compete with [0] ... AI to the rescue ;-)
[0] I am aware of SDG where I could play online, but that site is in decay mode. Getting an account involved mailing the maintainer and those times I tried to start a game no players showed up.