It would be a case of trading some BTC for ETH. I had thought of doing that when ETH was around $1700.00 but didn't. Sigh.... But ETH and DOGE are around all time highs (ignoring the fact that they are down a bit today), and BTC is down, so it doesn't seem like a good time to do anything.
When there is a downturn in BTC and some Altcoins, it is actually a good time to net all the popular tokens at the lowest price, I believe moments like now are moments to get more profit when these corrective conditions can be finished in the near future.