old coins: coins that went through the bull run
new coins: are ICO tokens from projects during the bear market,mostly not listed on exchanges.
It is obvious that all the aspect of the space had struggled due the giant force of bitcoin. Over the past year the average dump in price of most of the old token/altcoin from the last bull run is close to 90% while the new coin are holding to their price. Most ICOs in the later part of 2018 decided to postpone the listing which their decision could be justified or condemned as the market revives.
With the approaching news of bull run and present the value of altcoins,
1. can the altcoins ever hit the ATH price even at $20000 bitcoin?
2. Can the new coin from ICO be an alternative even with so much old coin held in some portfolios?
3. will you choose to hold on to old coins or sell to invest into new ICOs?
In my observation it's certain that when Bitcoin price goes up every other Altcoins follow as well, I don't think new coins from ICO will be a good alternative to the old once, you don't expect New coins without working products, not listed yet to surpass a project with working product and already trading on exchanges. To me I believed holding the old Coins will be more beneficial and safer.