so what we can see from v7 migration:
- this big investment company has no test environment, has to stop main net to migrate . Those, who care, running both main an test networks in parallel and switch to new algo when everything is tested and plan for migration old wallets is ready
- existence of asics for cryptonight and monero migration to V7 was known for quite long, for sure switch to it for nxb could be better planned
- this company with a number of great programmers underestimated complexity of V7 migration. Now they stuck for 3 days with no visible results. Or maybe not so great, or do not exist.
I don't this this migration showed anything new, but just proved that coin is about dead from the start. Yes, they will do more attempt to revive it, but team is bad in all senses, so no luck.
we need to prevent easy coin of asic. we have already answered this question.
switching to v7 itself is a good thing, but it does not explain why do you need to perform it the worst way possible. Looks like someone is unprofessional.