This idea has been merged into another idea. To comment or vote on this idea, please visit LATER-I-621 Schedule first comment to hide hashtags.
I used the Bettr app before switching to Later, you can add up to 30 hashtags in a 'first comment' section. The app then posts that info immediately with your post and description. Something like this would help a lot to keep the description looking pretty and free of huge hashtags dumps.