i think it would be a good idea that the damage each shot in battle is less randomized and very slightly more powerfull with each experience level. so that for example a ship that deals inbetween 1-15 damage with one shot deals 3-13 damage at a higher level and on average deals a litle more damage then its lv 0 counterpart. This would cause more experienced crews to be less vulnrable to the dice making it more probably they will win battles that they are statistically supposed to win.