A little RNG is good makes things feel "fresh" when they should be and effective in times of need. but too much RNG isn't good at all. When AST first came out they made them with too much RNG, but they mitigated it to a decent percent. the new card system is a nice touch, this way each card is viable no matter the situation, but the other things they got are overkill. WHM got tacked on RNG, similar to BARD for 3.0... yeah this will be fun for 4.0 now lol, and SCH had their entire damaging tool kit and AoE removed.