Character “Survival” Skill-tree, separate from but additional to class skill-trees.
All players have this tree as well as whatever class trees they’re working on. Any XP earned doing any actions gives XP to that profession as normal, but fills this “general” tree XP at the same time. Maybe at a 50% lower rate? …but you’re always working on it, regardless of whatever else you’re doing.
This tree of skills represents how your character grows and develops from being in the world of ATT, with no direct bearing on the specific profession/s you indulge in, but simply living and surviving as you tread whatever path you’ve chosen for yourself and whatever actions you do.
This skill-tree would consist of a variety of less fancy / showy skills. All passive perks. Such as -
Path-finding - Marginally faster foot-speed.
Metabolism - Hunger decreases more slowly.
Keen Eyes - Very slightly better vision in low-light (for caves and night-time)
Fortitude - allows a player to keep sprinting even below 50% hunger (but not below 10-25%?), but depletes remaining hunger faster.
Tough Skin - Slightly more HP / Slight natural damage reduction
Safe Landing - Slightly reduced fall damage
Smack the ol’ vote button if you think this idea has potential, and please feel free to suggest more little not-class-specific passives!
Credit to @Klives for initial inspiration.