A quick stab at improving the existing SR5 priority chart & method without adding a ton of complication. I just used the chart in the SR5 preview and ran with it; adding 4 rows to the chart.

Design Goals:
1. Keep the system intact with minimum of changes, any character made by the original book system can be made using this. (pick an 8, 6, 4, 2, and 0 point row for each and it's identical to the core book).
2. Keep it user friendly for fast chargen for new players while avoiding choice paralysis
3. Increase granularity by adding half-steps between the existing 5 priority steps
4. Switch to a Sum to 20 system (with 9 steps... instead of sum to 10... there's 20).
5. Make it easier to adjust the power level of games by altering the number of Priority points (street level game might only use 16 priority points instead of 20... while a prime game might use 24). Replacing the questionable sidebars in the book which only affect equipment and extra karma for the most part.
6. Use priority point cost instead of letters to avoid confusion (priority 8 down to 0, instead of A to I)
7. Optional: allow people to turn unspent priority points into 10 karma each (inefficient compared to spending them normally, but doesn't seem like a bad option).

CODE

Pri.Meta.......Attr..$$$...Skill..Magic or Res

.8..Human(9)...24....450k..46/10..Magician/Mystic: Mag6, 2 R5 Skills, 10spells
....Elf(8)
....Dwarf(7)......................Technomancer: Res6, 2 R5 Skills, 5CF's
....Ork(7)
....Troll(5)

.7..Human(8)...22....350k..41/7...Magician/Mystic: Mag5, 2 R4 skills, 8 Spells
....Elf(7)........................Technomancer: Res5, 2 R4 Skills, 3 CF's
....Dwarf(5)......................Aspected Mag: Mag6, 1 R6 Skillgroup
....Ork(5)
....Troll(2)

.6..Human(7)...20....275k..36/5...Magician/Mystic: Mag4, 2 R4 Skills, 7 Spells
....Elf(6)........................Technomancer: Res4, 2 R4 Skills, 2 CF's
....Dwarf(4)......................Adept: Mag6, 1 R4 Skill
....Ork(4)........................Aspected Mag: Mag5, 1 R4 SkillGroup
....Troll(0)

.5..Human(6)...18....200k..32/3...Magician/Mystic: Mag3, 2 R2 Skills, 6 Spells
....Elf(4)........................Technomancer: Res3, 2 R2 Skills, 1 CF
....Dwarf(2)......................Adept: Mag5, 1 R3 Skill
....Ork(1)........................Aspected Mag: Mag4, 1 R3 SkillGroup


.4..Human(5)...16....140k..28/2...Magician/Mystic: Mag3, 5 spells
....Elf(3)........................Technomancer: Res3, 1CF
....Dwarf(1)......................Adept: Mag4, 1 R2 Skill
....Ork(0)........................Aspected Mag: Mag3, 1 R2 SkillGroup

.3..Human(4)...15.....90k..25/1...Magician/Mystic: Mag2, 2 spells
....Elf(2)........................Technomancer: Res2
....Dwarf(0)......................Adept: Mag3, 1 R1 Skill
..................................Aspected Mag: Mag3, 1 R1 SkillGroup

.2..Human(3)...14.....50k..22/0...Adept: Mag2
....Elf(1)........................Aspected Mag: Mag2

.1..Human(2)...13.....25k..20/0...Adept: Mag1
....Elf(0)........................Aspected Mag: Mag1

.0..Human(1)...12......6k..18/0...None



Method is simple... the chart is slightly exponential... it's definitely not linear... going from priority A -> B resources is 450k - 275k==175k. Going from B -> C is 275k - 140k == 135k. To reflect this I choose round numbers at roughly 40% of the interposing value.

For the rest it's generally split the difference round down (to reflect the exponential nature of the chart, I tried to avoid round up at all costs). The only hard part was trying to decide to do with priority 5... dwarves and orks... dwarves get the round down... and it didn't seem right to put ork (2) on the same line as dwarf(2) given how many boosts orks get over dwarves.

Enjoy... overall I tend to go more towards the BECKs stuff... but I can see the appeal in priority for some.