I have a number of reservations about ETH. They mostly focus on the increasingly-heavy blockchain storage requirements, and the fact that a "misconfigured" ICO from Status could cripple the network.

Shifting to Proof-of-Stake is a huge risk.

I don't think they have thought it through and are only focusing on what they view as potential savings in energy expenditure compared to Proof-of-Work.

I suppose time will tell, but I'm wary of the future for ETH.