I think a good option would be to add access to the marketplace directly from the game. For new players and even for me, although I'm not new, it may be difficult to search, switch to different sites, connect wallets, enter passwords, etc. as it is now. Instead, a Marketplace tab could be added from which we would have access to all tradeable items in the game with the option of paying with ROBO tokens, and not as now on OpenSea for USDT and MATIC. This would translate into better usability of the token and its value, and easier access to Marketpace would only help in spending ROBO, which would be at hand because we have wallets connected to the game ;)