First of all, and importantly thank him for his hard work - fending off the aggro he gets 24/7 is not easy and oh buy him a beer
Secondly, pass along my apologies if my rant about the photo app in the feedback depressed anyone (it was a rather long essay, I might have been overly harsh lol) ).
To the questions, if his taking them.
1) whats happening to landscape support?
2) can he shed any light on the lock screen and the lock screen app(s) i.e tetra lockscreen, live lock screen + will api's be released to developers?
3) whats up with not allowing users to set a static ip address on the device (certain lumia models have that option but not all) and when are they going add that to the list of features needed by pro-users?
5) can they add a darn stop button to the now playing bar?
It's one of my biggest pet peeves with WP - having a separate tile just to clear the now playing bar, it's clunky, inefficient and makes for a terrible experience. For instance I use stop+clear, The stop tile is pressed, there is brief animation where the app opens then closes.
6) Ability to create a full offline backup via a desktop / store client - is a must - is one in the works?
This is going to be needed going forward as my last backup was 834 Megs and I don't have that many apps or games installed either.
They get stored to your onedrive and count towards to your space usage. So if you have 5 gigs (as new users for outlook.com will have), 5 or so backups and it's full.
7) How does telemetry data quantify user enjoyment?
for instance I don't necessarily enjoy being shown a grid of photos when loading the photo app although it's more efficient. I'd rather a see a cycling panorama of my favourite images / moments, it's one of those things that is hard to describe. It's one of those random sparks that can brighten up your day. I've already said my piece about the photo app on the feedback app so I'm not going to repeat it here.
8) Any thoughts in adding the ability to amend after it's added / down vote feedback?
There are tonnes of 4 word "feedback" about something... which are extremely vague.
9) Quite hours, it's not tied to location services on the desktop so why tie it to the on the phone?
I understand the need for geofencing but what about the regions where Cortana is not available?
Quite hours is an awesome feature and more people should be able to benefit from it.
10) Double tap to wake for the 950 and 950 XL, any thoughts on that?
11) Garage apps, I'm sure some are curious and many frustrated so I'll ask on their behalf why don't we see UWP's from these teams?
12) Glance background, before we could do something like this but now we can't.... as the glance background app has been made defunct. What are his thoughts and when will we see something better incorporated into the O/S or a return of the app?
13) What phones does he use personally 
I've got a few more questions however I need to get back to my online assessment lol.