There's a difference though between "just published" and "reviewed, verified and published". We'd gain a lot if anyone simply included the code they were using with the papers. It doesn't matter if it runs and how generic it is. If it's important, it can be fixed by the next user. If it's not, it didn't matter in the first place if it's verified.

Of course verification on submission is also a great idea, but we can make it the next step.