Meh. Don't like the idea.
Someone can make map in which all zeds spawn in a big hole down, wait the necessary time and then spam M32 down.
If there are a**holes bent enough on levelling to crawl onto an exploit and just click LMB, every system can be exploited. And your idea hurts natural talents - if someone can score 600 headshots in one long game, he deserves his SS levelling pace (mind that I think levelling should be disabled on beginner and normal).
Someone can make map in which all zeds spawn in a big hole down, wait the necessary time and then spam M32 down.
If there are a**holes bent enough on levelling to crawl onto an exploit and just click LMB, every system can be exploited. And your idea hurts natural talents - if someone can score 600 headshots in one long game, he deserves his SS levelling pace (mind that I think levelling should be disabled on beginner and normal).