Hi Diogo, thank you for the feedback! I loved the Katamari games, I can't believe we didn't directly use that as a reference (we 100% will refer to that from here on out haha!)
We actually debated putting in the re-roll feature while you're in the level, but it would have taken more time to test than we had (also I am AWFUL at platformers so testing takes longer than normal haha), but it's definitely something we'd like to consider in future! That's also a really good idea in terms of showing the non-selected sides of the dice, I'll add that to the list.
I think the repeated levels are down to the random feature we set up, which are (ironically) so random that they allow for repeat entries (which even though they're random, to us they appear less random). In future versions, we may look to refine the random feature to ensure entries are less likely to repeat.
And we also definitely need to make it clearer what the overall "Objective" is (with the purple door), so that's also something we'll add in in future too. Thank you again for the feedback