So I was looking at the new PoW data at https://dcrstats.com/pow (very cool btw) and I noticed that at the time I viewed it the SuprNova pool was 47.1% of the total network has rate. I remember Bad Things could happen in Bitcoin if one pool controlled over half the hash rate. Does the same apply to Decred or are there checks to stop that being an issue (i.e. PoS). I think I recall reading something about it but can't recall where.