We conducted some analyses of your re-entry idea.
Here are our conclusions (won't surprise you I think)
1 - re-entries look always nice in a strong trending market. But during ranges, it's REKT and gives IT ALL BACK times
2 - To re-enter on a missed m30 Universal/H1 opportunities, you can use the m5 crypto for instance.
If you see that the m5 trend/leading trend has the same color than the m30 trend/leading trend - means it's a better probability trade than usual
3 - the m5 crypto and m1 indices give enough opportunities daily.
As said above, adding more signals will end up with the inevitable conclusion of wrecking yourself during times of low volatility.
4 - so if I read between the lines in your question (because I had the same multiple times) - how to deal with the frustration of getting invalidated or missing out on an opportunity?
We talk about that in the private website forum: settings the alerts and trading multiple assets
Diversifying in terms of the traded asset and asset classes is a wonderful hedge.
W.Buffett said: diversification is a protection against ignorance.
I know he's talking about investing and not trading... ^ but that goes with our philosophy.