The current interface makes it a little tedious to block entire family of tags and one may not even know all the that tags exists in a given family. Ignored Tags is really a nice feature, however, it will add to utility if it can be made more encompassing.
Approaches I can think of:
Wildcards: Thus tomcat* blocks all of the tags starting with tomcat
Technology Stack: In this approach, entire technology stacks can be blocked thus for example, .NET blocking will block stuff like c#asp.net.net and others, but this would require classification of tags into tech-stacks.
(Better yet, 'Eco-system' level whitelist, wherein you add the eco-system which interests you, rest all are blocked by default.)