Hyperliquid recently introduced priority fees on Hypercore (testnet for now, mainnet soon).

Here's the tl;dr ↓
Right now, onchain trading is an infra game. The fastest server wins, not the best strategy. MMs spend on colocation, private RPCs, and custom engineering just to be a few ms faster.
Priority fees let you pay HYPE for execution priority instead. The HYPE gets burned, not pocketed by some infra provider.
Two things worth noting:
• Cancels always go before executions regardless of priority paid, so MMs can pull stale quotes during fast moves without getting picked off.
• Everyone uses the same public API and the same rate limits. No private endpoints, no backdoors.
Smaller MMs with better pricing but worse hardware can now compete. More MMs, tighter spreads, better fills.
The burns during high-vol events will be worth watching.