But this skill bonus (similar to attack bonus) system you propose is basically skills and ranks, isn't it?This decision drives me nuts. They are so close. The answer it right in front of their noses.
The game has weapon proficiencies and an attack bonus.
They're adding skill proficiencies. They need an identical skill bonus.
Now, if I want a more complex skill system, a module replaces the skill bonus with skills and ranks.
But this skill bonus (similar to attack bonus) system you propose is basically skills and ranks, isn't it?
Why? That sounds the same as just adding +1/2 level to all checks.You would apply it to all ability checks.
One, I imagine Batman has been spotted by a modestly attentive bad guy from time to time.Hm. If it progressed at the same rate (like, +5 over 20 levels), that . . . hm, that actually seems too weenie. Ideally nigh-epic heroes should never be challenged by things that are mundane, at least when they're trained, but having +5 from a stat and +5 from 'skill bonus' (+10 total) means you, the paragon of heroic skill-y-ness, might still fail a DC 15 check.
Imagine Batman having a 20% chance of getting spotted every time he tries to sneak up on a modestly attentive bad guy.
Why? That sounds the same as just adding +1/2 level to all checks.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.