This mod will only ever be for 1.12.2. As well, even if features in this mod are highly resembling of future updates, there will be no directly copied assets.
ReConstruct adds a number of decorative blocks to 1.12.2, focused on adding extra theme potential for areas that may be lacking, as well as some sillier options for those who want some unusual décor.
It is intended to be added to any modpack at any time, as there is zero world generation involved in the mod. Additionally, all recipes are either from vanilla items or the mod itself. However, having JEI is highly recommended - as with most mods.