I understand why there should be rate-limits on followers/ids and friends/ids. Without them, servers would be jammed yanking in followers and friends by the gazillions.
That really doesn’t apply to one’s own friends and followers. I have three new clients, one has 470K followers, another 623K, and the last 1.7 million. At 300,000 per hour, it could take a while to pull them in. By the time the data was complete, it would be outdated thus useless.
On the other hand, I’m not crazy about the idea of pulling in 1.7 million ids.