The problem with the sheer volume of shots argument is that it ignores the type of shots that are taken. I would rather take 3 clear chances inside the box than 10 speculative 40m prayer bombs. I think we have found a good balance at the moment and that balance should be maintained as its more effective than any other balance we have found in a decade abouts.
I agree Illara and Kongdogbia have different qualities and are a bit different types of players. Using Wilson's terms I'd say Kongdogbia is more a destroyer/surger hybrid type who can play a physical b2b game while Illara is more a regista/ball winner type blend. I think both though could work with Coq or replacing him albeit in different ways.
I'd personally prefer Kongdogbia as he is more of a physical powerhouse and that is something I think we have sorely lack for years more than anything else. We need that physicality. A Verrati/Pirlo type DLP is definitely not going to make us better than we are.
You are preaching to the choir - I've longed for some power in the middle.