Description
In my large project I still have routes defined as bundle:controller:action, which is deprecated since #25910. @Tobion did a great job on that PR, but the deprecation message has very poor DX.

PR for that issue mentions that deprecation message is displayed only during first request (which may be e.g. redirect) and is hard to spot. I believe the message should be displayed every time route is matched.

WDYT?