Great news for the NEO holders. I wouldn't worry about a core module redesign; Erik Zhang and Da Hongfei are brilliant guys who know what they are doing, I trust them to make the right call. I'm sure they have learnt much and will implement those lessons into a better future NEO. 

I haven't read the details yet, but to me dynamic sharding sounds like some sort of scalable sharding on demand. I question the necessity of it at this stage, especially considering the high TPS of NEO compared to Ethereum (which has many more DApps than what NEO does). I surmise that this is some form of future-proofing by the NEO council, which is good for NEO holders in the long term.

Cross platform smart contracts sound very interesting too, and are a step in the right direction in the crypto world. As you are probably aware, NeoX  exists to provide the atomic swap functionality for the NEO Smart Economy, but this smart contract is welcome nonetheless.

Hopefully this all helps to mitigate some of today's disastrous NEO price action...