There are some major benefits to using Google Slides:
The slide deck can be created collaboratively.
The slide deck is immediately online. Viewers (who have the link) only need a web browser to view it.
The slide deck can be exported to a number of formats, including Powerpoint and PDF.
Unfortunately, there are also a number of downsides:
There is no support for including vector graphics (SVG) in a slide.
Slide numbering is tricky.
To automatically place a running slide number in the bottom right
corner of every slide, including the total number of slides (for
example 1 / 22), you can install Andreas Steinkellner's automatic
slide numbering add-on script:
https://github.com/NarrowCode/slides-progress-bar
.
By default, there is too little vertical spacing between bullet items. It can be increased in the master template, but changes only apply to new slides created after the change. Do this first, before you create many slides.
By default, there is too much horizontal indentation before bullets. They should align to the enclosing left margin. There is no way to change this in the master template; it can only be changed on a slide-by-slide basis.
The default templates often have colourful decorative elements, which distract the viewer.
The default templates often waste much space around the margins, which could be used for content.