"Brexit policies"? They haven't got any.
If you mean the policies that come from government then no they haven't, as Cameron wants to stay in the EU! It's not in his interests at this stage to let us know all the positive things that will happen if we leave. But whichever way the referendum goes, then of course he'll then work on taking suitable action in Britain's best interests.
However if you're saying there are no good reasons from those wanting a Brexit then that's different. I think there are many good reasons, from various points along the political spectrum.
The "stay" campaign is churning out spurious reasons to stay. No, we don't know what the economy will do but isn't democracy worth more?
Fear of the unknown isn't a good reason to stay in an undemocratic EU that's heading for a federal Europe. We have this single, valuable chance in June to regain Britain's sovereignty.
It's interesting that older people are more likely to vote for a Brexit. They're the ones who have the life experience of many years before the EU even existed. Why the lack of confidence from many people that Britain can't stand on its own two feet?
Lets be honest if we go then why wouldn't the rest of the eu make life difficult for us.
To those who think the EU could "punish" the UK for leaving, and for us to be "blackmailed" as the OP suggests, IMO that's another reason to leave. Why stay part of an organisation that will bully us if we don't toe the line?
They seem to think Brexit will allow us to pick and choose how the rest of the world works
There will be negotiations with other countries, not deciding how they work. And yes, we'll be able to choose to make more decisions here in this country, instead of having Brussels tell us what to do. If we get a government we don't like for a few years, then democracy will allow the British people to choose a different one. If the EU goes in a direction we don't like in the future, and we've stayed, then what?