Game map revamping advice!

Hey i made a game thats ment to be like a doge hangout game it was like the primary game for my group and im getting bored of the old design and i feel i wanna revamp the map but i dont know where to start

if any of you could give me advice that would be really nice

game link: Alfies Doge Cave HQ! - Roblox

i advise you to play the game then tell me what needs to be revamped and what would be cool!