What do you all think about a strategy of just investing a little bit in each of the top 100 coins, in hopes that one takes off? Seems like downside risk would be minimal.
that is only fooling yourself into believing you have diversified where in fact you just made things complicated for yourself and increased the amount of money you lose. two main complications are keeping track of 100 different coins, their prices, news, fluctuations, dumps,... and also storage which is impossible to do safely and keeping on exchanges is just dumb.
diversification means you invest for example $1000 in bitcoin, $100 in altcoins, $1000 in Gold, $1000 in stocks and bonds.