Long-time leading NFT marketplace OpenSea has debuted a new tactic in its battle against upstart rival Blur, today announcing the launch of OpenSea Pro—a marketplace with more robust trading tools than the standard version, plus zero marketplace fees (for now) and plans for NFT-based trading rewards. OpenSea Pro is a rebranded and expanded version of Gem V2, the upgraded version of the NFT marketplace aggregator that it acquired in April 2022. At the time, co-founder and CEO Devin Finzer fram...