The 4K PVR records the same way the regular PVR did.
On the remote press "REC TV" > "Series". Navigate to your show(s), press OK. Click on "change settings" from there you can select how the show will record. There is no master default setting that does this for all recordings. But you can suggest it in ideas.
Do they actually read suggestions and act on them?
Yes, you can see a number of ideas which have been implemented, including unlimited minutes roaming, MMS Group Messaging, Easy Roam US and Europe, as well as many others which can be viewed by going to the Ideas section, and choosing 'Completed' from the drop-down box.