Athlete;
add con to list of abilities to raise.
you can make running jump without any movement beforehand.
actor;
add; you gain proficiency in disguise kit.
charger;
instead of +5 damage you get +2× proficiency bonus as damage.
Dual wielder;
when you make attack action, you can make offhand attack in addition to main hand attack in the same action. If you have extra attack feature, you gain extra attacks with off hand also. You cannot make off hand attacks as bonus action after taking this feat.
durable
+1 con,
when spending HD to regain HP you regain the max amount.
Elemental adept this feat sucks...
either you gain +1 to con or casting stat in addition to current feat if you feel lazy, or...
choose spell damage type; acid, cold, fire, lightning, or thunder.
you ignore resistance to damage of that type.
you gain +1 to damage per die rolled.
when you cast spell with acid, cold, fire, lightning, or thunder damage type you can choose to deal damage of the chosen type. Secondary spell effects may work differently or not at all(DMs discretion).
this effects also works with magic items(you must spend at least a short rest concentrating on an item to gain this benefit).
great weapon master
remove "power attack" portion of the feat.
add +1 str or con to the feat.
heavily armored
add con to the list of abilities.
heavy armor master
changed to Armor master; requires light armor proficiency
you gain damage reduction while wearing armor in which you are proficient vs. non-magic weapons or magic weapons if you have magic armor.
damage reduction is;
light armor 1,
medium armor 2,
heavy armor 3,
if you have shield equipped and have proficiency for it raise damage reduction by 1.
Inspiring leader
change the time to 1 minute.
You can affect yourself plus a number of allies inside 60ft equal to your level×your charisma bonus.
mounted combatant
add +1 to str,dex or con to the feat.
resilient
ability and the save doesn't have to be the same.
or, gain no bonus to ability but pick 2 saves. One must be good(dex,con,wis) and one "bad"(STR,INT,CHA)
savage attacker too much rerolls....agh...
raise the damage die of all weapons used.
1-->d2
d2-->d3
d3-->d4
d5-->d6
d6-->d8
d8-->d10
d10-->2d6
d12/2d6-->2d8
shrapshooter
remove "powershot" feature from the feat.
add +1 dex or con to the feat.
skilled
gain 4 skill or tool proficiencies.
or 2 proficiencies and +1 to any ability.
Tavern brawler
gain +1 str,dex or con.
your unarmed damage becomes d4(if you are monk raise the damage die by one step)
your unarmed attack gains finesse property.
when you hit a creature with unarmed strike you can as a bonus action attempt a grapple.
when you hit a creature with any melee attack you can make one unarmed attack as a bonus action.
tough
gain 2 HP per level,
or +1 con and 1 HP per level.
edit: changed savage attackers 1d10->1d12 to 1d10->2d6.