The recruiting game makes my blood boil, so I'll just point to some issues but the main thing is that tech recruiters are clueless about tech and don't bother reading about you or the target company before wasting your time, and I'm not even getting at having someone really look out for you actively trying to find a good match.

General issues or "Top 10 Mistakes Technical Recruiters Make":

  - Not selling their company (or the position)  
  - Not looking into the prospect’s web presence  
  - Sending “cold call” vague email  
  - Not understanding basic technology  
  - Not disclosing basic information (an idea of salary, company)  
  - Using buzzwords, offering silly perks  
  - Not asking relevant questions  
  - Radio silence, not being responsive  
  - Not being clear on the process, what to expect  
  - Not understanding what motivates people beyond money

I think a good recruiter is not scalable in principle since it would need someone to get to know you a bit.