As for the "dice rolling". I like that it will be a neat little visual and you have to click the dice to roll it. I'm so used to D&D so its wierd that the game straight up tells me "You need to roll 11" or whatever. I would prefer if the DC was visible aswell as your bonus to the die. So "You need to roll 11" may be exactly the same as "The DC is 25 and your bonus is +14" but not really, because as the game progress you will see your bonus increase and even if the DC also increase you feel like your character is becoming stronger.
A level 1 character "Needs to roll 11" but so does a level 10 character but if I have +27 to my check I see that my character has progressed from when he only had +10 to the check. Do I make sense? Feel like this was a bit of a ramble but whatever.
