If I have kids, I would love to name a boy either Filip or Kilian. I also love the name Bilbo and Thorin, but don't know if I'd go through naming a child that. But Filip and Kilian, definitely.

^I thought you meant using the names directly, not names which sound similar.

The names, in their original form at least, stand out so much that I'd think it'd be inevitable that any child would be bullied over it.

Either one, names that are similar or using the name as it is. Even if I named my child Filip and Kilian, I'd still call them Fili and Kili though.

Well that is something you can never avoid, you'll always have bullies. You just teach the child to be proud of their name, themselves, and not let people get to them.

As tempting as it would be to do so, I think they'd face quite a bit of bullying in school if I called them Legolas. :P Though I guess Bilbo wouldn't be so unusual...