iOS 15 - let’s talk about it

Thanks @TomMonaghan cc: @CTOD

Reposting on this thread. I was hoping you could answer a few more specific questions about this:
1. I posted a feature request for email throttling on the Ideas Forum in December 2019:
https://community.hubspot.com/t5/HubSpot-Ideas/Make-Throttling-Available-for-Email-Newsletter-Sends/…
Since the “send based on recipient’s time zone” feature is going to be compromised by the Apple IOS update, is there a plan to allow for email throttling (or something similar) to limit the send volume on IP addresses?
2. For the purposes of segmentation, what is the best way to know which contacts have this feature enabled? Does the “Apple Mail (iOs)” section of the “Opens by email client” metric accurately reflect all the contacts who will be affected by this?
3. In this video from Hubspot YouTube Marketing Manager Tory Bullock (https://www.youtube.com/watch?v=Gp_bEKjBoeE), he recommends utilizing text as another way to reach clients. Is there a plan for add a native text feature into Hubspot Marketing Enterprise?
Any info you can provide on the above (as well as any suggestions on how to handle list management / removing inactives moving forward) would be greatly appreciated. Thank you!