In order to scale a system that has not been able to process a large transaction volume, Ethereum has been working on a transition from a Proof of Work system to Proof of Stake system. As the transition nears, investment firm, Wave Financial has released research on the viability of the new system.
Topics in the paper include a primer on Ethereum, Proof of Work vs. Proof of Stake, the Phases of the transition, and how to become a validator:
It then touches on the potential ROI on participating on the system and the potential downside risks. You can access the entire report at: https://wavegp.com/ethereum-research-paper/.