One of the things I thought was odd about D&D Next is the ability score-based saving throws. I couldn't quite formulate how I was dissatisfied with it till now though. Ability-based saves feel like they overlap with skills.
Now, this should be a problem in 3.5 and 4e too, right? Somehow it didn't feel like it. And I think it was because things like the 3.5 grease spell called for a balance check rather than a dexterity saving throw. In 4e, someone attacked your reflex defense, so it also didn't seem like much of an overlap.
Conceptually it might not seem like much of an overlap. If you were trying to balance on a wall, you'd roll a dexterity check plus your balance skill. If an evil wizard cast a fireball spell, you'd make a dexterity save. But your tumble skill, useful for things like rolling down a steep incline or running between the giant's legs doesn't help you dodge that fireball.
Now, this should be a problem in 3.5 and 4e too, right? Somehow it didn't feel like it. And I think it was because things like the 3.5 grease spell called for a balance check rather than a dexterity saving throw. In 4e, someone attacked your reflex defense, so it also didn't seem like much of an overlap.
Conceptually it might not seem like much of an overlap. If you were trying to balance on a wall, you'd roll a dexterity check plus your balance skill. If an evil wizard cast a fireball spell, you'd make a dexterity save. But your tumble skill, useful for things like rolling down a steep incline or running between the giant's legs doesn't help you dodge that fireball.