I'm pretty sure OP has just designed a look-ahead compressor with a slightly over-engineered response envelope, which in practice will probably respond worse th

I'm pretty sure OP has just designed a look-ahead compressor with a slightly over-engineered response envelope, which in practice will probably respond worse than most existing mastering limiters with lookahead capability on the market. Nice write-up, but this is not some new, groundbreaking approach :)