It wont be, in the next few months. 70% of the LoL population is going to move onto DotA 2.
There's only a limited amount of people on Sythe that play LoL, all different timezones. I highly doubt you'll even get more than 2 teams for it, which makes it impractical.
Many players of LoL won't probably move on, LoL's more popular then dota / hon because it's free, that's the main reason it's the most popular, ever since HoN wen't free, it spiked up hard =/


















