I decided to make a mod that allows early game (or new) characters to access several mutagens reliably (but not necessarily easily).
The mod comes with a new building, with two start scenarios, and a custom profession.
The building is called the “Body Modification Clinic” and it contains a vault as well as reinforced vending machines that contain mutagen and medicine.
To balance it out however, there are also considerable dangers in this place in the form of other mutants and zombies.
The reason why I made this mod, was because I like mutations but by the time I get a proper opportunity to reliably attain mutagen - it would be around the mid-game; a time when I either prioritise better things like power armour or I go solely for safe mutations (Alpha et al). In order not to undermine a character I have spent days/weeks playing.
Anyway, here is the link.