What I was trying to say - random numbers and rolling them is not fun at all. Seeing a number pop up on screen without any flair is... meh. So you do want some sort of animation, be it a dice drop or a sword swing. The reason I called it "gambling" is because in my opinion/experience the main appeal of dice rolling is the suspense - and that's a core for any gambling game. Waiting for what number will be rolled, stuff like that. I honestly don't know how to avoid the gambling association if you're gonna have dice for attack. (now that I think about it - tabletop games also use dice, but they also rely on the same suspense as the gambling games, so not that far off imo)
The animation is fine, but it comes out of nowhere and is not well explained. Also it triggers right after the roll, so in regards to the crab claw - I think I didn't even see the original number that I had.
Considering your game is all about combat - I'd focus on that - monster sprites/animations, attack animations (including player attack). Anything that would make the game look more game-y, I guess.