The bond for a MAX_GAME_DEPTH claim is fixed at 300_000_000 * 200 Gwei = 60 ETH which is meant to cover double the estimated cost of a passing a maximum size LPP. However, the gas price is actually dynamic and dependent on factors such as network demand for gas (EIP-1559).
According to our calculations, the costs of submitting a max-size LPP can be optimized to slightly below 100_000_000 gas. Hence, the estimated gas cost will generally be well above the expected cost, as well as the 200 gas price being a very generous estimate.
Nevertheless, it is technically possible that the actual gas costs surpass the bond if the gas price rises above 600 gwei. In that case, the total cost for passing a maximum size LPP will exceed the bond reimbursed to the user, leading to less incentives to pass the LPP. Consider adapting the bond based on the current tx.gasprice at the time a move at MAX_GAME_DEPTH - 1 is made.
