(Not financial advice)
50℅ BTC
30℅ ETH
20℅ Solid top 100 altcoins/tokens (10 of them)
I think that this is the best setup.
Why shy away from promising projects just after their downfalls from all time highs? There's no reason if you're ultimately HODL'ing. It's completely fine to have some exposure in case you get a exponential return.
Asset diversification is possible, but it just depends on the OP's own plans. I'm happy with diversifying because of the profit potential I make, but of course for some of the potential altcoins you may have mentioned among others.
So far I have diversified to 60% - 70% bitcoin, while 30% of them are altcoins.
But of course this is not financial advice for other users because obviously this is just my decision and investment plan. It's fine to sell all altcoins for bitcoins, even if they do the opposite. Each will get a risk and they must be able to consider their own risks regarding the selection of investment assets.