I tried to like Loopring, but their L2s were hardcoded circuits rather than zkEVM which the Polygon and Matterlabs team (and Starkware to a lesser extent) are pushing ahead with this year. Allowing the community of third party developers to contribute value (sound familiar Reddit?) is going to make the whole L2 space to gangbusters.
As it stands now you can't do much with Loopring except what the first party devs have built, which is basically a standard excahnge.