1 pt needed. Are all 2h using darts nowadays then?
You are right on that. But those javelins would at least have two damage points more, but three less ammo. And you can't know if those throwing backups won't just need a little bit of time to actually show up. You know, people who used xbow before it was made 2 slot could need some time to respec or even get the idea, but then it could very well turn out to yet another throwing weapon spam. Although I don't know how effective you will be with only 1 PT and about 0-50 WPF (for most of those players).
I am just "afraid" of throwing weapons, balancing wise. It's incredibly difficult to place the weapon somewhere between not being OP or super annoying due to popularity and/or decent skill point investment efficiency, but on the other hand to not make the class too UP or luck based. Throwing is balancer's nightmare.