Yes, I can add this option.
But you already have two other ways to solve this issue.
1st - You can just subscribe to: # which will generate events for ALL topics, and you can just wire up the events for topics that you are interested in. This could pose a problem though if you receive a really large number of messages on topics that you are not interested in because it would be generating events constantly.
2nd: You can use the action MQTT.Subscribe to subscribe to as many topics as you want. You just need to put these all into a command that runs when VC starts up.