Well I can say I used to be very good at doing complicated math in my head and I was also very good with sizing things up visually.... Like say looking at a nut or bolt and knowing what size wrench would fit it ect.... Not so anymore and I feel like its more than just not using those skills particularly when it comes to math but I do feel my "spatial ability" or whatever has definitely changed as well...
I notice a huge improvement in my sense of smell for better or worse, some people, some people, but men in particular smell nasty LOL
Ive also noticed that I seem to hear better, music just sounds better to me and intricate details are easier for me to isolate and enjoy.... Its like I can have a much more intense focus on all the individual parts like say the drums and the bass/rhythm while still being able to fully experience and appreciate the melody of the vocals or guitar and keyboards ect... What used to all just sound good as a whole now has many more dimensions to it and I noticed this within my first 2 weeks on HRT

Ive liked music my whole life and while my tastes haven't really changed old favorites have a whole new meaning... While Ive always been emotionally involved with some music I also find that Its much more intense now as well

It was a very unexpected but welcome effect

I also don't seem to tolerate loud noises or music nearly as much as I used to, I just don't want or need it as loud to appreciate it...
Visually I do seem to have a better ability to appreciate colors and subtle differences in tone as well as textures, everything just seems brighter... I never really appreciated colors before and actually just preferred dark boring greys and I had no clue how to coordinate colors at all.... This I heard many times from women in my life LOL... Well thats no longer the case because I get complemented all the time now on my taste in clothing and style and it just seemed to come naturally to me

Ive always been a pretty cold, super rational, logical person, very withdrawn and shy.... While Im still a lot like that I am more emotional, warm and empathetic for sure and even more sociable