In response to the above question, here's my (deleted) comment:
"I don't think I would be investing in ICOs/IEOs but I would consider existing coins or tokens like eth.
It should be fine as as long as I'm not going to throw in a lot of money into it. My portfolio would look like 90% bitcoin and 10% altcoins."

Let me rephrase that to:
I don't think I would be investing in ICOs/IEOs if bitcoin's dominance reaches that point but I would consider investing in already existing coins like Eth. It should not be that risky investing in existing alts as long as it's only a small part of my portfolio (e.g. 90% of funds goes to bitcoin and the rest to altcoins).

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Let's see if that will be reported and deleted again