Let me say, I'm not saying I don't get where you're coming from. I'm just obviously quite happy with 5e because I think it's easier and once you really delve into it... I just think many people don't fully understand and appreciate how it works.
Level 1 Mage, Arcana +5 because proficient and +3 Int Level 1 Fighter, Arcana +0 because not proficient and 0 Int DC 10 = Moderate. Mage needs a 5. Fighter needs 10. Considerable difference.
Same scenario. Level 10. Mage = +7. Needs 3 or higher Fighter = +0. Needs 10 or higher.
Similar scenario. Level 1 Rogue, Stealth + 7 with expertise and Dex +3 Level 1 Mage, Stealth +4 with proficiency and Dex +2 Level 1 Fighter, Stealth +1 no proof and Dex +1 and Disadvantage because of armor DC 13 Passive Perception for enemy
Rogue needs 6 or higher, Mage 9, Fighter 12 with Dis.
Considerable difference.
Same scenario. Level 10 Rogue = +11, needs a 2 Mage = +6, needs a 7 Fighter= +1, needs a 12 with Dis
Considerable difference.
It's all in the way you build your character. Yes, proficiency alone might not be a huge deal, but couple it with Ability score differences and increases and it makes a bigger impact. Add Expertise and it's an even bigger impact.
