(FEATURE) Subcategories and Plans - for Shop Items.
A good feature would be an option to create/add subcategories for shop items, and add plans to buy them. Let's show you an example. The first image shows player models, and Custom Weapons (each separated by subcategories). The second image shows Plans. (About subcategories, this is just an example, the main idea is making a way to add them for every single item possible) Both features (sub-cats and plans) are currently added in Zephyrus Store.
Sub-Cats:

Plans:

@nanociaglia, I understand correctly that "Plans" is a tab with a choice of item duration? The idea looks interesting. But there is a small problem, not all modules use the natives below, so I can download with confidence that this feature will not work in all plugins, although it will be written in their config... https://github.com/FD-Forks/Shop-Core/blob/cc66a88e442915a5d07052b940e1a055fb935983/addons/sourcemod/scripting/include/shop/register.inc#L169 or https://github.com/FD-Forks/Shop-Core/blob/cc66a88e442915a5d07052b940e1a055fb935983/addons/sourcemod/scripting/include/shop/items.inc#L228
If this feature is still in the interests, I can implement it, unsubscribe here.