Hmmm. Most such organizations take their character from their leader. Especially the founder. Rules of hierarchy you know.
Wagner was created by Prigozhin or Utkin, and its character was notably like theirs, pragmatic and practical. Anti-bureaucratic, to say the least. A gang of pirates, doing whatever it took, on the spot. Not the usual Russian military top-down approach.
Thats why they were better than the regular army. Their value was in their leaders, and their separate status from the state structure.
Hardly. Let me know when the Wagner operatives who are active in Africa today or those training Belarus troops are called home because their fearless leader got killed. This could not have turned out better for Putin. That’s why Putin ensured it turned out that way.