Maybe moving some % of BTC into ETH is a good diversification strategy, while it's cheap?
It is wrong and silly when we move from BTC to ETH. No matter how expensive ETH is, the growth of Bitcoin is much greater than that of ETH. When Bitcoin raises prices multiplier, your ETH can not buy.
Would it be better to move from BTC to BCH instead of ETH? The BCH is going to upgrade soon.