This move is highly likely to increase the attention and accessibility of altcoins among traditional investors. Nasdaq, as a well-known trading platform, proposing to include XRP, SOL, ADA, and XLM in the cryptocurrency benchmark index means these altcoins are stepping into the mainstream financial sector, which can attract more attention from traditional investors. If approved by the SEC, the Hashdex ETF could invest in these cryptocurrencies, further increasing their liquidity and market depth, lowering investment barriers, and enhancing accessibility. For portfolio strategies, if approved, it may be worth considering an appropriate allocation to these altcoins for diversified returns, but one must be aware of their high volatility and regulatory uncertainty.