The datafication of the system and Experience Value allowed them to advance quickly, skipping the usual process.
Yet the inability to control Magic Power itself remains a reality; it's not a problem that can be solved by datafication of Characters.
After all, Kana's datafication system is an ultimate stripped-down version, only able to datafy the Attributes of Characters along with their equipment.
Without a Profession System, there's no way to help them quickly master Magic Power.
Originally, it was just a shard of the Stone of Creation; naturally, it can't cover everything.
The datafication of Characters and equipment, to some extent, already exceeds what a shard could achieve.
Kana's previous communication mainly inquired about whether, by using the shard to expand professions, he still needed to base it on his own profession.
After all, his profession is Blood Knight, in-game it doesn't matter, in reality, without that unique bloodline, it's simply impossible.