You do not want to auto switch . This is not the time for me to explain why as I need a lot of time to show the down sides of it.
Are you referring to Nemos re:auto switch?
Please elaborate on downsides when you find time/inspiration.
I thing auto-switching scenario on zpool works in general, the issues with graph sometimes not showing balances are not really issues at all because pool does record your hashes under "Balance" heading.
But the big question remains: is it more profitable than mining single coin?
And regarding profitability: MPH charges 0.9% fee vs 3%(?) on nicehash.