Thanks. This is helpful!
Some questions to that:
Are there any general rules / guidelines around ASI vs. Feat selection as well?
If I understand correctly, there's gear that sets certain stats to an absolute value (like headband of intellect) instead of increasing it relatively by a certain amount like it works in WotW (headband of intelligence +2 etc.). What's your take on this? To me it seems to invalidate choices made around stats to an extent. It would even encourage respecing / retroactively dumping stats that are boosted by that gear. Do I miss something here?
ASIs vs. feats discussion seems to come in three varieties based on player priorities:
1. Which will let me punch better?
In which case there are Feats for certain builds that outpace ASIs in damage. Great weapon master + polearm master = huge damage increase over a +2 to attack and damage especially for 'crit fishing' builds that plan out ways to get advantage on every attack.
Magic initiate can fill in gaps that your spell caster wouldn't otherwise have access to, or give your melee character access to Hex or Hunter's mark.
2. How do I increase my own non-punchy capabilities?
Is it better for me to gain added mobility so I can avoid things? Or get into the fight faster to get more hits in than a +1 will make up the difference for. In tabletop there are a lot of feats that help with this that came with later 'expansions' (not as much in BG3 though).
Magic initiate here can add some utility spells like jump and guidance that can help in day to day stuff.
3. How do I be a better team player? Feats like Sentinel and Inspiring leader aid your party in ways that protect your team much better than doing a little more damage or healing an extra point per spell would.
Honorable mention - Does this fit my character's RP/Background? Things like Tavern Brawler and Keen Mind aren't super powerful, but add flavor with a dash of situational usefulness.
If your goal is to make a 'perfect build' there are tons of guides for table-top that are great starts even though BG3 seems like it will be a little different for some feats.