1) Below is the link to my presentation
http://www.rvl.io/abhijeetmuneshwar/abhijeet-ashok-muneshwar/fullscreen/#/0/1

Below are the two problems:
Problem 1 )
I would like to add the support for mouse scroll to navigate through slides.

Problem 2 )
Below is the existing layout of slides:
1 4 5 6 7 8 9
2 4 5 6 7 8 9
3 4 5 6 7 8 9
10 4 5 6 7 8 9
11 4 5 6 7 8 9

But I want the layout of slides to be like below:
1
2
3 4 5 6 7 8 9
10
11

(Where numbers represent the rank of slide in sequence)

Please help me.

The contrast of the new page 'plus' button is so low that I could not see them at all on one of my monitors. On the other I can only see the horizontal one. The grid lines are also extremely hard to see.

I had to go to the help to figure out how to create a new vertical slide.

The problem is of course monitor and viewing angle dependent. But I haven't done anything particular about this (work) setup, so perhaps more people have problems. It is a pretty bad first experience to not be able to add a new slide.

I took some pictures, but don't know how to upload them. I can also make a movie of me changing the monitor contrast slowly. At about 50% the grid lines suddenly appear/disappear.

I want to use a background image that fills exactly the available background on my slides, no matter what screen size it is presented on (so the background image should scale as the content does).

For example I use 960x720 presentation size and I have a 960x720 pixel image. The options "cover" and "contain" don't provide the desired result since they will draw the image over the whole screen (rather than the slide). So when I select the only remaining option "original" it fits perfectly on a 960x720 screen, however when I move to a larger screen then the content is scaled while the background image remains at its old size, i.e. effectively not acting as a background image anymore.

It would be nice to have an option (e.g. "Scale", "Fit", "Adjust") that will insert the image in its original size and then scale it on larger screens the same way the content is scaled (so background image and content always stay aligned).

There are a lot of votes for adding Javascript support and several for adding more sophisticated animation support.

If there was a way to simply toggle a CSS class with a select number of events (hover, tap, click, keydown) that would go a long way to satisfying these users. By providing the ability to listen for an event and then toggle a class on an element, you can add custom keyframe animations for example or even simply hide or show elements with the display or visibility properties. That in and of itself would be and incredibly powerful (and really safe) way to allow people to create more complex presentations that included quizzes, custom animations, etc.