Feats (PHB)

All feats in the Player's Handbook are described below. For legal reasons, they cannot be reprinted here.

Feat	Description	Change	Reasoning and Advice
Alert	Grants +5 to initiative, can't be surprised, etc.	Modified	See Perception
Athlete	Grants +1 Str/Dex, more convenient athletics.	Removed	Stat-boosting is no longer allowed in feats. Other abilities are not strong enough to justify a feat, and can be accomplished with ordinary skill checks. Consider feats such as Tumble instead. This feat (minus the ability boost) might make a good Background.
Actor	Grants +1 to Cha, advantage to disguise checks, etc.	Removed	Stat-boosting is no longer allowed in feats. Other abilities are not strong enough to justify a feat, and can be accomplished with ordinary skill checks. This feat (minus the ability boost) might make a good Background.
Charger	Bonus attack after dashing	Removed	Spend a feat to do what everyone in 3e could do for free? No. Charging has been restored as a baseline maneuver, and the Power Charge feat (see General) makes it even better.
Crossbow Expert	Faster crossbow reloading, point blank shot	Replaced	Consider the Archer feat (see Ranged Weapons) which is not limited to crossbows.
Defensive Duelist	Better AC against incoming attacks once/rd	Removed	Consider Dodge, Block, or myriad other options.
Dual Wielder	Better at wielding two weapons.	Modified	Mostly intact. See the Dual Wield feat in Proficiencies.
Dungeon Delver	Various benefits in a dungeon.	Allowed	I guess you can take this if you want. It's pretty crunchy.
Durable	Gain +1 Con, slightly better at gaining HP during short rest.	Removed	Stat-boosting is no longer allowed in feats. Without the Con bonus, this feat is weaksauce.
Elemental Savant	Ignore resistance with certain elemental spells. Better damage.	Allowed
Grappler	Better at grappling.	Allowed
Great Weapon Master	Gain occasional bonus attacks, damage boosting.	Removed	Consider Slam or Victory Rush as replacements.
Healer	Better use of healer's kits.	Allowed	Seems pretty weak, but allowed as-is.
Heavily Armored	+1 Str, heavy armor proficiency.	Removed	Stat-boosting is no longer allowed in feats. Consider Armor Proficiency feat.
Heavy Armor Master	+1 Str, resist 3 (physical weapons)	Removed	Stat-boosting is no longer allowed in feats. With new Armor rules, the resistance might be too much.
Inspiring Leader	Give a 10 minute pep talk, allies gain a few temp HP.	Removed	Consider the Leader role feats.
Keen Mind	+1 Int, always know where north is, eidetic memory.	Modified	Stat-boosting is no longer allowed in feats. Fairly weak without the boost. Allowed as-is (without stat boost) or as a background.
Lightly Armored	+1 Str/Dex, gain light armor proficiency.	Removed	Stat-boosting is no longer allowed in feats. Removed. Consider Armor Proficiency feat.
Linguist	+1 Int, gain three languages, write ciphers.	Modified	Stat-boosting is no longer allowed in feats. Allowed as-is, minus the stat boost. Also allowed as a background.
Lucky	3 die re-rolls per day	Modified	Focus handles this better. See new Lucky feat for an alternate version.
Mage Slayer	Attack mages who cast near you, advantage to saves against magic, etc	Allowed
Magic Initiative	Gain a few spells from a spellcasting class.	Allowed
Martial Adept	Gain a few maneuvers from the Battle Master archetype of the Fighter class	Allowed	This is awkward. Feats will likely obsolete that path, but this is allowed for now.
Medium Armor Master	Better at wearing medium armor	Removed	Too crunchy. New Armor rules should make this unnecessary.
Mobile	Gain +10-ft base move, Dash better, etc.	Allowed	A little crunchy, but allowed as-is.
Moderately Armored	+1 Str/Dex, gain medium armor proficiency	Removed	Stat-boosting is no longer allowed in feats. Consider Armor Proficiency as a replacement.
Mounted Combatant	Fighting from horseback	Allowed	Pretty situational, but allowed as-is.
Observant	+1 Int or Wis, read lips, Perception bonuses	Removed	Stat-boosting is no longer allowed in feats. Consider the Perception feats.
Polearm Master	Better at fighting with polearms	Allowed
Resilient	+1 to any ability score, gain proficiency in saving throws	Removed	Stat-boosting is no longer allowed in feats.
Ritual Caster	Gain ritual casting ability	Allowed
Savage Attacker	Gain advantage to damage once/rd	Allowed
Sentinel	Various tanking abilities	Allowed	Works well with Defender feats.
Sharpshooter	Precise and empowered ranged attacks	Replaced	Consider Precise Shot and other Ranged Weapons feats.
Shield Master	Shield bash and area effect protection	Replaced	Consider Block and Punt. Also note that rules about Shields have changed.
Skilled	Gain three skill proficiencies.	Allowed	Allowed for now, until new skill system is in place.
Skulker	Better at Stealth	Allowed	Really crunchy, but allowed as-is.
Spell Sniper	Better at long-range spells, gain a cantrip	Allowed	Pretty niche, and partially overlapped by baseline metamagic, but allowed as-is.
Tavern Brawler	+1 Str or Con, unarmed proficiency	Removed	Stat-boosting is no longer allowed in feats. Consider Iron Fist feat.
Tough	Gain +2 HP/level	Allowed	Equivalent to putting 4 points into Con, except it doesn't affect saving throws. Fine as-is.
War Caster	Better at casting spells in melee	Allowed	Super crunchy, but allowed as-is.
Weapon Mastery	+1 Str or Dex, +4 weapon proficiencies	Removed	Stat-boosting is no longer allowed in feats. Consider Weapon Proficiency feat.