Oh I undestood what the half-on & half-off block meant. It's like how in many 2d games, the player's legs and a small part of the body are on the ground's layer. I mean that keeping the player semi-transparent just removes that illusion/feel that the character is standing on top of the ground, rather it looks like the player is stuck in the ground.
About the leaderboard, many games have implemented the scoreboard feature, that's not the what I meant. Since the jam was about leaderboards implementation, I didn't get to see the "highest" score at the end 😉, rather only the score for this run.