I am using Skydemon on a Samsung Tab7 and a Huawei P9 as backup. [Both excellent]
Would it be possible to have a choice to make the width of the track line display narrower and the waypoints smaller?
I find them rather oversized in proportion to the map.

Further to my previous.
Is there a reason for the waypoint and font size being limited to minimum of 80% of the normal size?
Airstrip names come up incredidibly large on the map - look at the strip by Gatwick, OK I know it's closed!
I love the usefulness and practicality of Skydemon but after a lifetime of using FMS on 747s I would just like a slightly less clunky presentation of my route.

I have to say I quite like the sizing, but I accept that it may not be right for everyone, and I do tend to run SD with the map zoomed out more than in your screenshots (500k).

Have you considered changing your options so that only the ICAO identifier is shown rather than the whole name? Obviously that won't fix the track line width, but it will be one step in the direction you're looking for.