The German Pirate Party is halfway to getting enough signatures. If you are a german citizen or resident you  can add one here: Formular Europa.

But yeah, registering is in many countries a hassle and it is so to preserve insider advantage.

FYI: Sweden demands no registering for running in elections, though the voting is doen by taking your partys ballot, checking one candidate for preferential vote (not mandatory), placing it in an envelope and dropping it in the urn. So a new party needs to provide and distribute ballots to every poll station. And since poll stations are closed until the election starts, that means distributing everything on the morning of the election. A bit of a economic challenge and a serious logistical challenge for a new party.

Sweden's finest (and perhaps only) collaborative, leftist e-newspaper Synapze.se