Logback.xml versus gradle build

Feature request: provide means to change gradle log output. It would be nice to have (more) control over the logging format (apart from the -i -d -q options), eg: adding a timestamp gives some useful info on (which part is taking much time) long-running build plugins/tasks (gradle wrappers around legacy processing code). Not sure what would be the best approach to do so: using logback configuration file or … ? For more info, check: http://stackoverflow.com/questions/26470124/logback-xml-versus-gradle-build

Generic request, would/could also solve another (more specific): http://forums.gradle.org/gradle/topics/send_log_output_to_different_destinations