Here I see Old Player who have 35+ Account Actually got G/P Skills If im not Wrong. Well to be honest If the Game Follows the Story of a Character, A character Of Low level (Beginner Level) Should'nt Be Able to Go to G Skills..
Here is the Skills management Depend on Level:
Level 23 Can Open a M1 Skill, So at Level 30, The Skill Level Upgrate to M2, At Level 32, The Skill Level Can be Upgrated to M3 and so on ( Yeah we have to Read Skill Book After 2 Char Level) Like this At level 50 Player Can Upgrate his Skills to G. Then after every 3 Level We can upgrate 1 Each so that at level 80 it can go to P Skill..
What i mean to say is at Level 50 Skills can be upgrated to G while at 80 Skill can be Upgrated to P
Then Every Character Skill Power Will be Balance Depend on their level..