I think you should either display all information, like your own bonuses and the maluses from the other party, when you could indeed just simply get rid of the dice roll, and show a plain percentage. Or you hide all information including that you have done a roll at all, so that the dialogues are more free-flowing and natural coming along and the incentive to reload is minimised.
Also the outcomes and the extent of locked content can be pretty hard, which further incentivizes constant reloading. Skillchecks should not suddenly have drastic consequences, but allow a little extra information, a slight shortcut or an opportunity to leave out or postpone a single fight.
