The official integration already gets the heartbeat status from the hue bridge about every five seconds. That change was put into effect a few months ago. So you should no longer need to do any individual polling, and if you do you run the risk of interfering with some of the regular messaging that’s going on.
Heartbeat status is a special option available through the Hue API which doesn’t require individual polling of the hue bulbs and so is intended to allow for smooth operation. What happens is that the bridge writes a copy of every command that it sends to the bulbs into the heartbeat log and then that’s what is sent in response to the SmartThings’ request for status.
So while we used to need to do individual polling, that’s no longer either required or recommended. 