I'm not the mastermind of pro cs, I never claimed to be one. :) But history of CS:GO scene, roster changes and even FaZe showed us many things. What will be different on new FaZe beside players if they don't get the new full time IGL? Nothing, maybe just bigger firepower, but it still will be about their form and if they can hit their shots because their strats will be basic as it was until now... NiKo as IGL can be a good solution just for a limited time, then I think it will be just same as we already saw in FaZe's case.
It's my opinion and you can have your own.