Well... I kinda see it as one rn...It's not really that much of a milestone. Perhaps it could be affixed by a moderate increase in content quality or production effort.
For some it can take alot to get there. But personally, I think you should look at just how many subscribers watch your videos on a regular basis. Since that video is intended to be seen by those subscribed to you, it would only make sense to see if it would be worthwhile having subscribers watch it.Well... I kinda see it as one rn...