The most balanced Skyrim's ever been. Crafting skills very easily break the economy and progression, so this mod limits the access to those skills. Changes:

1. Perk Requirement: You cannot use any of the crafting stations or gain skill experience until you take the first perk for that skill, ie: you cannot make potions until you have the Alchemist perk. The game will display a little message and boots you out if you try it. This does not apply to Cooking station, Tanning racks and Smelters which are not associated with any skills.
     For alchemy, you also cannot discover ingredient effects without the Alchemist perk.
     For enchanting, you also cannot recharge enchanted items without the Enchanter perk.

2. One Crafting Skill Only: Once you take the first perk of any crafting skills, you cannot perk into the other two.
     If you take Alchemist perk, you can no longer do any enchanting or smithing.
     If you take Steel Smithing perk, you can no longer do any alchemy or enchanting.
     If you take Enchanter perk, you can no longer do any alchemy or smithing.

Compatibility
Mods that change the skill trees for those 3 skills may need a patch. Patches are provided for Requiem, Adamant, Ordinator, and Vokrii in the FOMOD installer.
File is ESP-FE (has the ESL flag) so it does not take up a slot in your load order.

Changelogs
= 1.0.1 =
* Fixed Adamant patch but with the Smithing perk.