I'm not talking about Warlocks, I'm talking about their patrons specifically. And even more specifically, the patron of the custom player character.
Just because the character is custom, there is no reason to suppose the patron is. The PHB suggests a number of named individuals as potential patrons. Several of these have stat blocks, personalities, backstories. They are NOT custom characters. At least one of whom is definitely in BG3 (Vlaakith - undead/undying warlock).
That is true, but as I said above, each individual, even if you just stick to the ones suggested by the PHB, can potentially have wildly different relationships with the character depending on which one they are, even within a patron type. And notably, none of those named characters has been hinted at being in BG3. If they make the custom character patron a pre-set character that has an agenda and such in the game regardless of the warlock then they have to reckon with the nature of the pact and how much the warlock has already done for their patron, and what that is. And having that level of backstory introduced to the player in the middle of the game when they may already have had their backstory in their head... actually yeah, that sounds like what Larian would do, in my opinion.
There are the types of patron, but within each of those types are myriad individual possible beings which could be the patron, and each one carries the potential for a different relationship with their warlock.
Yes and no...yes you are in theory correct but specifically because our patrons are actual NPCs we know for a fact we have some interaction with as it's been confirmed warlock players can interact with their patrons they are also very specific NPCs in BG3...so there are only three of them possible for the player to choose from and they may well appear in the wider game as part of quests or side quests even for non-warlock players.
Unless you've heard somethingI haven't, I think your'e overestimating what "interaction" means here. I don't think they'll physically show up and talk, at least not outside of cutscenes. I think there will be warlock dialogue options where we can ask for help and our patron will magically whisper in our ear, no need for any physical appearance at all.
