Unfortunately, the team at Valve didn't do as good as job as they could have. All players, no matter how many matches you've played or how many hours you've sunk into the game, were started at rank 1. To play competitive you have to be at rank 3. To rank up a few levels can take a while. I tried to play the Operation Bloodhound missions and they take a while to complete. It's not very fun to grind through the missions or other game modes when all I want to do is play competitive. Sure I could treat the game modes as practice but the ranking system is glaring me in the face. It makes it hard to ignore that every death match is a way to gain experience points. I don't give a damn about XP or levels! I just want to make my rifle shots are true and my pistol skills are adequate to cover my team mates and help us win a match!
I don't understand why experienced players who have put in over 500 hours and over 100 competitive matches have been punished with the ranking system. And there's no nice way to buy out of it other than to grind through the missions and grind through a bunch of matches which I no longer treat as practice but as merely a way to buy my way into competitive match-making.
I like the idea of the ranking system but they should have boosted the experienced (> 100 in-game hours?) players to rank 3 and then let the magic hacker cam system catch the obvious cheaters. Cheaters would stop buying new accounts because getting to rank 3 would be a challenge. That's what I really like about the ranking system and why I enjoy it so much in DOTA 2 (even though I haven't ranked up in DOTA 2 to be able to play competitive haha).
Hopefully Valve figures out a way to make this easier for experienced players who hop back into the game only to find they can't play their favourite mode. Of course, the alternative is just to join CEVO and play competitive matches there.