So harvesting opportunities are given to individuals who hold huge amounts of NEM, right? Will that change people faraway from attempting to be harvesters? If theres a great deal of other coin online games in town- and there are- why would a person choose to harvest NEM when they might not be chosen for most harvests?
Nope.
That's the point of proof of importance over proof of stake. The most useful and active accounts get the most rewards, not the biggest balances. I dunno if they're excluding exchanges. Since there are very few fees to go around it's kind of moot at the moment. It's not a busy chain.