@Meddler/Design Team

Why is the design team so cautious about the "melee only" attribute on certain items. What design issues does this create in terms of balance? I am mainly inquiring about which seem to be the primary offenders. I don't see a world where making them "melee only" wouldn't have benefited both Riot and the players.

I find the general accessibility for these two items to be counter-intuitive. Could you please shed some light on this? I think there are many who would like to hear the design team's rationale for this decision.

TL;DR

Why can't there be more "melee only" items?