I think if you dome the ends it will end up making the lights look a little too big, maybe if I had used smaller fibre optics that could of worked, but it is hard enough drilling 0.5mm holes through resin.
Good idea though.
For the stand, I got the idea from here. I like the idea of not having something directly under the model holding it up. also wanted it to be interchangeable.
I thought the same thing for doming the ends. Great idea, but I'm afraid that it will make the lights look too big. I've been searching for different types of cutters that may do the job. Maybe a micro pincer if they make one or something that fits directly over the fiber and with a twist cuts it off. Hopefully someone who knows of something like this may chime in.