D&D (2024) Help me with the wording for a homebrew Origin Feat

[Not a Decepticon]

Versitile
Origin Feat, Can Be Taken Only at 1st Level
Your unorthodox style of learning allowed you to find new ways to achieve mastery in your chosen field
You gain the following benefits:

• Choose your Intelligence, Wisdom or Charisma and increase it by +1, to maximum of 20
• Choose a Class in which you have at least 1 level in. You can substitute Ability Score increased with this feat in place of Intelligence, Wisdom or Charisma for the purpose of any Features or Requirements of the chosen Class

So here is an idea - make a feat that allows to substitute for things that were poping up in abundance in older editions or similair games, often in awkward forms. There was a Serenity Feat in 3.5 that made Paladin entire WIS based, removing Charisma. There was Kung-Fu Genius, which made Monk INT-based, Academic Priest which made Cleric INT-based, Pathfinder has Scaled Fist, CHA-Based Monk. This feat is supposed to do the same, but in a simple way. The idea is with it you can be WIS-based Wizard, CHA-based Monk or INT-basedRanger and it's supposed to apply to class features, multiclass prequisites and spellcasting, including spell save DC and Spell Attack Bonus. I could use help with checking out if it's worded properly, in accordance to rules of 5.5 edition, as much as we know about it now.