I am a bit skeptical that you would be using the abilities of Actor, Athlete, Dungeon Delver, Keen Mind, Linguist, Mage Slayer, Martial Adept, Mounted Combat, Observant, or Tavern Brawler more often than you would make an attack or damage roll. Or Stealth roll if you are a thief.
Also-- while a +1 on a D20 is a 5% increase, a +1 on a d8 is a 12.5% increase.
I actually made a scout around Observant, until my GM got board of me auto-detecting all the traps an secrets. So made me role for everything voiding the feat then let me take Alert as a replacement.... Basically a rogue (16 wisdom and dexterity)with observant and expertise in perception gave me a passive perception of 22 at level 1 and even Deadly traps had a max DC of 21 to spot for even high level characters. So he switched to investigation hoping to use my inelegance instead....but I had a passive investigation of 19 (14 intellect) and the investigation traps seem to max out at 15.... By level 7 he said my character was broken as a scout, pick a different feet. ... I hadn't even found my eyes of the eagle yet!!!
Also, I wanted to pick Keen Mind because my DM was making us role for judging how long we were on watch to see if we were getting a long rest or not. Also, roles to see if my character remembered names and places when I forgot them. I ended up buying a note pad for me and an hour glass in game for characters to manage watches. Still, I think there is a chance he might break my hour glass so I may need these feat or a spare hour glass. Also, knowing directions under ground will be key if our campaign ends up in the under dark / fey wild / shadow fey.
Athlete, is great if you have a GM that likes knocking you prone.
Mounted Combat is broken feat with a battlemaster due to advantage + lowered critical threshold + polearm
TavenBrawler is great for those "no weapons here" moments and "i use my first attack to knock my opponent down, by bonus action to grapple him by pushing a boot down into his chest so he has a speed of 0 and can't get up on his turn, and my second attack hit him with advantage." Then my opponent has disadvantage on attacks against me and I advantage on him until he breaks the grapple and stands up... wasting a turn... at which point I just do it again.
I built a barbarian around this in one campaign because high strength + athletics skill + advantage on strength checks to knock down and grapple the opponent while raging. Also, its nice to punch a monk in the face for 1d4 + 3 at level 1 while taking half damage with a D12 hit die pool so they can't laugh at you fighting them with your fists.
Some of them like Actor and Linguist could be really handy out of combat if your the "Face" character its just not an archetype I want to play for the most part.