There’s a good kind and a bad kind of attractional.
If by attractional you mean that your Sunday service is the best show in town, or that you run the best programs, then we need to talk missiology. God can and does use this approach to ministry, but it raises problems. For instance, it feeds into a consumerist mindset that goes shopping for the best set of services to meet our needs. And it’s only a matter of time before a better service or program comes along. Don’t get me wrong: God can still use this approach. It’s just not ideal.
If by attractional you mean that people hear of a group of people who truly love each other, who ignore race and class barriers, are really different, and who care for the community selflessly, then this is a good type of attractional. Some might even call it missional. If people are attracted to your gathering because your people are qualitatively different, then this is a good type of attractional.
Long live the second type of attractional.