You can't take multiple points early in AA skills in this game, this is why Angelic Fury is a bad skill.
eg: I've seen people take 1 point in it to farm and power blade of the serpent, but that is about all you can get away with.
I'd also point out that adding a crap load of speed to Reg does not let him extend and retreat earlier on. He struggles enough in his lane focusing on his damage skills, sinking points into a skill that now provides speed simply makes it harder to actually push a DG to be able to extend, nullifying the point of speed. However, a Reg with a crap load of speed has dire consequences in long games when he is pew-pew-pewing that crap out of you with Mage Slayer and Ashkandor. Be careful.
I am thinking that the bonuses on these skills should be front loaded because you can't affor to sink point in them early in the game.
Example of what I mean: Maim is 5/7/10 and 1/2 the bonus comes from one point.
So I am thinking
1) Fury should grant 5% speed, giving you some pretty decent advantages for one point.
2) Maim should have a duration of 4
Those 2 give you a net 10% speed difference for 2 points, and if you want to kite you take anklet, giving a net 25% speed difference, and that should pretty much be the upper limit (because it is the upper limit for everyone else sinking 2 skill points)
Part II of AA skills
Scope is the other skill people occasionally sink 1 early point into to blast away on towers, so it should do something extra as well.
One thing I;ve noticed that is actually really helpful for Reg is getting extra vision radius. This allows him to extend without the need for speed.
So idea: Scope should increase vision raidus, and be front loaded in the bonus to allow Reg to position better
eg: 8/12/16 +vision (omni should also be 50% higher or so, so if you are looking at your map you see DGs at a further distance)
So in summary of AA skills
-Front load AA skill bonuses as maim does, so 1 early point offers some pretty decent advantage
-Maim 4 second Duration (3 is too low, 4 is what UB has, so start there)
-Fury 5% speed (1 point in fury is pretty nice now)
-Scope gives +Vision Radius (Option to increase Reg's positioning and ability to extend without too much speed buffs which have pretty significant late game consequences, +vision also let's your teamates see what you see, so anyone in your lane is indirectly getting this ability too.)