New security idea for mining preventing 51% attacks

I just recently learned about the coin “Digibyte” and that they use multiple POW algorithms to secure the bloockchain…I was wondering if this would be doable with Litecoin…if we were to integrate the sha256 algo to do say 40% of the hashing then scrypt miners can do the rest…I think my Litecoin “ASIC’s” like gridseeds already do this…because form wha ti userstand about the scrypt algo is that there is a sha256 potion to the mining before the scrypt part…I don’t know though which is why I am asking…
think its possible that I could use like an s1 and a gridseed to do some kind of “asic boost”?

productive input only please…if you don’t have something nice to say then don’t say anything…trying to learn here…not get beat up…