So if a large ASIC would disappear and the difficulty is too high for the remaining miners, the next block may take 20, 40, 60 or more minutes. After that, the difficulty goes up again.
not 60 mins, it would take about 2 years for cpu miners to hit the next block.
how much would that cost per day (in missed main chain revenue)?
$50 a day before the powe bill.
And the latest gig: mine empty blocks.
The areshole who is abusing testnet4 is better with mining empty blocks to avoid any block being invalidated if any transaction was not right, although if done right he can avoid that scnerio but i don't think he cares.
That means there would never be any halvings and it pushes testnet functionality even further away from real Bitcoin.
There could be halvings every 10 blocks or so, regadless, the current testnet is way far from mainnet, halvings happen way sooner, most miners don't even know about it, they just keep on getting hit by a burst of blocks that some asshole mined in secret, you are wasting time solving block 100 when someone else is already solving block 113, all you learn from it is how your blocks get rejected by the network.