I think the main reason for uncertainty is NA.  He is an unknown quantity when having a few quid to play with.   He did brilliantly with scunny but staying in this league was good enough for them.  Lets see how he comes with a different kind of pressure.   
I dont agree we have as much chance of relegation as we have promotion.  You only have to look at Leeds, Norwich, Millwall, Forest, etc.  I think we will start pretty average but if  promotion is at all a possibility come Jan, he will invest again.     
10 days and counting.