Well the clue is in the name, they are the only party along with the greens that want to really talk about serious reform of the country's economy, tax/benefits system etc. We have to talk about private funding of health care in this country in my book, just for example. We should be more aggressive in our competition with neighbouring countries for investment such as Ireland and Netherlands are with aggressive tax regimes. We need to be much stronger on immigration across multiple areas.
Their policies are not costed with any accuracy from my knowledge and no demographics based impact assessment of their "radical" ideas shows a utopia at the end. The only reason to support them is due to the irrational hate of migrants many have in my opinion. And it's entirely irrational. They are fudgein people.