Should blizzard remove trash timers?

[Klaus]

I can see your argument here. Perhaps just increasing all trash respawn times to 4 hours would be sufficient. This would mean that you would have to clear trash to a boss once per "night".

I'd say put them on a 90 minute timer that reset when the boss is engaged. So, if you're actively working a boss, the trash won't repop. But if you're trying to "preclear" an instance for a later crew, it'll come back on you.