Some current algos such as ethash rely on limitations of memory bandwidth. It looks like it is still not enough to fight ASICs.
Well since tx hash is hex coded and there are 16 symbols 4 algo do the trick.
1 can be the current eth algo with a tweak (bigger dag say 8gb)
1 can be progpow
1 can be CNv2
1 can be the new ebwf algo with a tweak (more ram say 8gb)
that asic would be pretty wastefull
it would not be 1 chip it would be 4 chips with a switch so only ¼ is used at a time
And the first of each month a gpu miner simply switches.
the game is race to the bottom with out gpu's making some money.
and gpus make for millions of adapters of coins. since millions of gpus are used for other shit