I don't think you've necessarily understood the scope and impact of the borrow checker. Bounds checking is just a sane default (hygiene), not a game changer.
so yes, I understand that it's important. It doesn't need to be in the compiler though? I think it's likely the case that you also don't need to have annotations littering the language.
I wish you good luck! Successive attempts to achieve similar levels of analysis without annotations have failed in the C++ space, but I look forward to reading your results.
