all the aspects that being a Burgmeister would add to the story are essentially related to being rich, not surname.
which by the way is not even a certain consequence, MC could also discover that he is a Burgmeister but this would not necessarily lead to having access to their wealth.
moreover most of these evolutions would be quite negative, MC for now is one who solves problems, so he would become one who pays to solve them, a spoiled one like Rusty, one who buys Maya's gratitude ...
I don't think the plot gains anything from this minor "twist".
that MC is linked to a rich family is an established fact already now.
I make 2 hypotheses, based strictly on nothing:
1) MC's family could be a business rival of the Royce, or at least in contrast to them. this hypothesis would add difficulties to the relationship with Jill also smoothing out the social difference
2) MC's family is ready to welcome him as long as he moves away from his father, who remains frowned upon. MC thinks about it and finally refuses. More drama, happy ending
right now it seems to me that there are still no characters designated solely as antagonists.
Quinn and Tommy are definitely the least friendly characters with the most dark sides, but they haven't yet taken that step that would make them MC's nemesis.
between these two it is more likely that a clash, even physical, will take place with Tommy, but I believe there will also be a sort of redemption here