what if an algo or new stuff (whatever it may be called) is created that it hashes by rendering-> the kind of work where GPUs excel over ASICs and FPGAs...
Rendering is really not that much different from hashing different algos.
Even if there was a similiar algo like that, it would still be possible to create an ASIC.
After Sha256 got ASICs, Scrypt was created by the Litecoin dev as a way to keep it GPU mineable only.
I think it was more intensive than Sha256 but a few years later ASICs came out for that too.
Same with Dashcoin which was based on the X11 algo which was also suppose to be ASIC resistant.
So Equihash and DaggerHash are no different.
The only difference is that the DaggerHash is more GPU resistant.