1. Each coin has a different transfer time, due to a number of factors. Compare below. If a coin price is going nuts and price is jacking fast, I don't want to lose more money waiting for a slow transfer of coins. As you probably realized already, a single news article on a major site can cause the price of a coin to jump significantly. You have to be ready to move when you these news events happen, in order to maximize your profit potential.
https://support.kraken.com/hc/en-us...ong-do-crypto-or-digital-asset-deposits-take-
2. I like to invest in ETH right now as part of my strategy, and I don't currently have any BTC. Waiting for a big slide before buying BTC. So trading ETH for alt coins is my only option at this point.