I don't disagree, but note that these are *boot* errors. So they basically tell you of problems that occurred at boot, and the timestamps will all be roughly the same, telling you what time the server was booted. It's not a general error log. I don't think this qualifies as a Bug; more of an Enhancement.
Emmanuel Hugonnet <ehugonne> updated the status of jira WFCORE-274 to Coding In Progress
PR: https://github.com/jbossas/jboss-eap/pull/2097 Upstream PR: https://github.com/wildfly/wildfly-core/pull/368
Verified on EAP 6.4.0.DR12 "failure-timestamp" => 1417787387717L println new Date(1417787387717L) Fri Dec 05 14:49:47 CET 2014