Throwing a DnD friend of mine under the bus here, but he's been coming up with some rather weird character concepts. The Aarakocra tank build I mentioned a while back came from him; rather than use light/no armor and flying around at level 1, he had his bird using heavier armors and intentionally restricted his ability to fly. His justification for this, aside from trying to accommodate early-game table balance, was that his bird had a damaged wing and thus was remaining grounded while it healed up; it was an ability that he was going to have to wait on (i.e. until the party is leveled enough to take on flying enemies) and until then he was stuck in the same position as the rest of his group. He also tended to avoid ranged combat, being a more aggressive melee combatant than even the party Fighter.
Aside from that, he admitted to using the Custom Lineage from Tasha's as an excuse to bring races from older versions of DnD into 5e, like the Gnolls or Lupins, strictly using the same stat spreads. He also never took Darkvision for some reason outside of a few cases; said that he "prefers" to play with restrictions.
He's been wanting to bring some of his build ideas to our table; what do you guys think?