It's all about the original question, the querent's goals, and the community's additions
This is really a tough question because the question was fairly clear in it's request:
- Wants a BBEG for level 1 players
- Wants to know how to go about making one
The answers that came in were some frame challenges, but some also did directly answer the above question and need.
But then your bounty came in, and you wanted additional material on:
- How to create a conventional villain for a level 1 group
Which really is the same thing and already answered. You also included a specific idea (Vorka from We Be Goblins.) It's unclear to me that if you already have something specific in mind, why not create an answer around that yourself? You've got the goal and the tools to do that.
And it remains unclear what is missing from answers, or if you simply misread the answers and didn't realize your clarification wasn't answered. If you did see those and think something remains missing, then being clear as to exactly what's missing would also have been helpful.
Otherwise, looking at the clarification to see if it really is a clarification or if it's a separate question you'd like answered that wasn't included in the original or in existing answers would suggest asking a new one would work better.
Chicken or egg?
After reading several responses of yours in the comments, I think the disconnect here for many of us is that the original question really just focuses on the creature itself.
Your bounty, however, is about the encounter with the BBEG. While BBEG encounters can be different, and usually are, it is encounter design - not creature design. And while those are very much tied together, I've often found the need to change my future encounter plans after player narrative actions.
Designing the BBEG is the first step. Figuring out how to make the encounter, with that specific BBEG, is a separate question and should be asked separately.
Considerations on how to alter BBEG and encounter for a level 1 player group is a concern, but I honestly don't feel that it's different from much other encounter design in terms of planning, considerations, and balance.
In general, it's always okay to ask for more!
As long as the request fully fits in with the content of the original question. If it does, then you are simply bountying for more directly relevant information or asking for something that is missing.
But if the community leans on the frame challenge, one should likely listen to the community. It's always okay to ask, but don't be upset if you don't get it because you may be asking the community do something that they already said they don't really agree with. The frame challenge exists for a reason!