How can we improve the Media type Snippet?
Works as intended. Simple and effective.
The user experience can be better. Design: Keep it simple: +Transitions +Size +Portable +Interaction To many options now, combine them under main headers. Looks like the programming logic has been followed with the complementary terms (longitude, latitude).

How can we improve the Reference Snippet?
Works as intended. Simple and intuitive.
Not so clear, what it does, there is no visual reference in the output screen, how to choose the frame you want to go to...

How can we improve the Longitude and Lattitude Snippet?
It should reflect the position within the frame, for ease of use. Longitude and latitude are confusing terms to use in video, should say position in pixels, in my opinion. Like in the motion tab.
It's counter-intuitive. It should have the position like width and height as it would on the motion tab.
The range is to precise, it is a very big number to comprehend. Would help if there is a visual reference in the output screen.

How can we improve the Size Snippet?
Should be in percentage, in my opinion, like in the motion tab.

How can we improve the Luma Matte Snippet?
Very confusing to use, should have some sort of visual feedback, or include the transition within the plugin (selecting for a drop down menu, or something along those lines). Also, placing it below the intended track is counter intuitive. We're used to working by layers, so we instinctively place it on top.
Extremely confusing. Doesn't make any sense from a user perspective. Even after reading the manual, it's hard to understand and then how to apply it. Also, placing the transition on the track below the end result is counter intuitive. It should always be position on the track above.
There are 3 options: Luma matte Overlay Overlay luma matte In a way a luma matte does an overlay... not clear which ones does what, looks like three times the same input.

How can we improve the Render Mode?
It should be setup to combine by default. Also the nomenclature should be easier to understand at first glance, since only by reading (and even doing that I found it kind of confusing) the tutorial and instructions, I could somewhat understand what I was doing with each mode.
Should have other nomenclature. It's not clear what each name actually means. Among all of them, the one we found ourselves using was the Combine feature for it allows us to work transitions and portals.

How can we improve the ImmersiaTV export panel?
It looks great, and it is simple enough to use. My version of the plugin had a different layout, but it is still easy to understand and use.
We still don't understand what the function of the transition tick box really is. Should allow for codecs and resolution customization.
Interface and ease to understand is good. Had some bug starting up, after set and export, it took some time before encoder pops up. No indication (spinning ball?) that the export will start.

Explain your answer. What would you like to see changed about the integration?
They integrate fine, apart from some install issues. As of right now, it's very clunky and non-intuitive to use, except for the export panel. Though in the 2015.3 version of Premiere it did not export correctly (no image output).
The whole system and method should be made more intuitive and easily understandable. This also changes our style of workflow, directing it into a NEST oriented type of workflow due to the fact that we can only use one sequence to proceed to the final output.
In general: Think we have to work on the UX, make clear what it does: transition portal interaction. Don't copy code ideas (longitude, latitude) to the plug in, maybe work with X-Y-Z (?) The output screen: all the setting changes we make in the portal effect, are not seen in the output sceen.

What is the main difference with the tools you regularly use for your productions?
The layering of tracks. As of right now, from using the plugin, I feel that we, as editors, will need to orient editing towards a nest workflow, so that we might place the final output files in the tracks contained for the final export (so that the plugin can differentiate between them). So it will only be used in the final output, not in the actual editing of scenes.
At the moment, it requires a lot of research and trial and error in order to use. It should have a simpler approach to the terms it contains, so that someone that isn't used to a multiplatform workflow could be able to successfully use this tool.
I use the Mettle plug in After Effects: Is more a compositing tool. To make a portal: same principle, add luma mask. Rendering: don't find matching tool, really new and handy tool to export different options/movies for different devices.

Do you have any other comments?
We should try to integrate it with the new version of Premiere, especially since now it supports a live preview of 360 footage (which before required plugins such as Kolor Eyes). And see how the portals behave in the 3D space.
Now we make transitions / portals. The tool everybody is waiting for is bring interactivity to 360video story's.