Hello guys, having been here for a while now, I feel that having a higher percentage of your portfolio on bitcoin and maybe the rest 30 or 35% on already good and established altcoins like ETH, BCH, Stellar, brave. BNB, Vchain, etc, is a good way of staying away from useless projects. I have come to an understanding that running after new promising projects always leave you heartbroken in 97times, and running after IEO to quickly make up for past losses lead to more havoc on your fund. So stick to the safe zone.
That's true, nowadays people go after IEO because of the profit they will gain within a short time and once gotten they dump the token; the main issue is, many of the projects doing IEO have nothing good to offer therefore holding them after the IEO might be a bad decision. Thus the aim is, get into the IEO, make the profit if possible and convert to BTC or any other good altcoins. Just like you stated, holding Bitcoin in greater portion is the best thing and as for me, ETH, BNB and XLM are good to be in our holdings or portfolio.