Artist Kanekotsu [@Kanesys], twitted his project from I believe he said 10 years ago? to revived the concept arts of his "Gundam Thorns" series. This fanmade concept arts looks promising and could look nice as one solid series.
The characters and mech designs are wonderful and it looks like that the main Gundam "Thorns" can transform into something else!
Cover art shows inner framing concept, hints that the Gundam Thorns could be in two different modes just like Unicorn Gundam, but this time, with and without the armors installed.
Here are some more concept arts. Love the reference of G-Armor, G-Bull and G-Sky
You can see more concept arts from his PIXIV page