I just had another thought - likely somebody else has already realized this and I'm just stating the obvious.
Party leaders will run locally and be the first one on the list for strategic purposes. Provided the party receives at least 3% of the vote, the party leader will be guaranteed a seat in the legislature - either by being elected locally or being the first selected from the list.
Why run locally? Well, the party may not garner the 3%, but could still win a local riding.
This, to me, is a positive.
Updated: Actually, I just remembered this is similar to an idea Robert suggested way back last October.