It would be cool if one of the  Bitcoin financial services companies offered customizable DCA where a user could choose something like you mentioned. 

Say for instance if Bitcoin is down 30% from ATH double my DCA. If it is down 50% or more triple it. 

They should have a DCA program which increases your fixed amount when fear and greed index is lower (more fear).

bitcoin_beginners

The Magic of Bitcoin DCA

Undisciplined

Daily DCA is my strategy. However, when we get big discounts I will do larger buys. 