In no particular order:
After the Saya's vigil quest, Saya just kinda awkwardly stands next to Konzu, can she offer some dialogue or services?
For example selling stolen Dargyn for credits to wait for us next time we walk out the Cetus gate?
Solo mode in the Plains doesn't pause like it does in normal missions, and plans to change that?
What can you share of the Scythe -> Heavy Blade conversion?
How's the melee rework coming along?
How's the pet rework coming along?
What happened to the sentient arm-cannon thing?
Damage 3.0 is shelved for the moment, but can we have a balance pass of old mods that are currently worthless?
Such as the regular status and physical damage mods.
It's been a long time since we've had a warframe lore entry in the codex, any plans for more?
It's been a long time since we've had a Simaris target for a lore entry, any plans for more?
Will you add bonus mission objectives for bonus loot, like the cache search from sabotage, to other mission types?
The conclave rewards certain types of kills with bonus affinity, things like headshots, slide kills, comboing weapons and so on, have you considered adding something like that to PvE?
That once per mission side objective is a bit lackluster.
Will the Corrupted ever get their own weapon models, instead of reusing the Dera and Strun?
If they do, will we have access to their weapons?
In the codex some enemies have awesome panoramas while some are just an NPC idling in an empty room, can we get more panoramas please?
Any plans for introducing Void Spy? I really like breaking into vaults.
Long, long ago, Marelok was supposed to come out as a dual wield weapon, but due to some animation problems it was released as a single weapon, have those problems been resolved?
Will we ever get a Twin Marelok?
The accuracy stat in the arsenal is somewhat misleading, even deceptive at times. Can we have a clarification on what it means?
For those that maxed out their focus trees and have no interest in gaining focus anymore, can we have an option of removing, maybe even destroying without replacing, installed focus lenses?
With modular weapons like Zaws and the upcoming Kitguns, would it be possible to update the system so before gilding it is possible to change individual components or dismantle it fully?
Will Sunday Steve be coming back?