MyBB Hacks

This unofficial plugin from 2008 (!) still seems to work with the current version of MyBB. I can't find a newer one. However it seems to reverses the posting order of each thread page (1, 2, 3, 4, 5 ... 19 next >>). I would like to have an option to reverse the posting order of the complete thread, so that all messages are pushed down by replies.

showthreadreverse

Would that be possible?

Example:

Thread page 1
Post 1 newest post 29-07-2017
Post 2 reply 28-07-2017
Post 3 reply 26-07-2017

Thread page 2
Post 4 reply 23-07-2017
Post 5 reply 22-07-2017
Post 6 reply 21-07-2017

Thread page 3
Post 7 reply 29-06-2015
Post 8 reply 30-05-2015
Post 9 first post 29-05-2015

It'd probably be difficult to create such a thing because MyBB assumes the ordering of posts in a number of places (and plugins may as well).
If you're game, you could probably try editing the sorting order in queries in showthread, but you'll probably encounter issues with stuff like jumping to posts, quick reply and so on.