Instagram does support rearrangement however I have disabled this as the posts to too big to be moved around on the timeline. However rearranging them via the Profile is a better idea. I will take a look into this, thanks.

Converted to topic: http://support.ashleyrichards.co.uk/topics/277-rearrange-instagram-posts/

Not anytime soon but possibly in a future update.

Great idea! Hopefully at some point in the future.