Have you replaced the stop, tail and indicator bulbs (including front indicators) with LEDs?
I replaced mine and they are much brighter than the originals, which seemed to be pretty dim. I was a bit worried that people wouldn’t see me indicating right and being stuck in the road feeling a bit vulnerable. They’re not ridiculously bright, but they are as you would expect of a modern car. You would need to put a different flasher unit in, which is very easy to do. IMO it’s an important safety measure.