BNB Chain is part of the Cosmos Ecosystem, so it is a POS chain. Pardon my knowledge, but I thought POS chains are inflationary in nature, instead of having fixed supply.
What OP mentioned related to the BSC smartchain(EVM) while you talked about the BNB beacon chain which is already shutdown last years. So i think it's not relevant by mentioned beacon chain which is already dead.
As for OP, honestly, i put all of focus on the contract design. A small loophole can cost the live of your proect. It's also becoming the main loophole that often targeted by the hackers. We have so many projects went bankrupt due to the exploit, it should tell us a lesson to put contract and its function as the most important aspect.
This is also the reason why so many projects hired various auditors to ensure they won't let a loophole to miss, then the project they built for years is getting die in matter of hours.