(Disclaimer: sometimes i love creating conspiracy theories) ;-)
Putin's favouring of Hungary as gas and oil hub for new pipelines to the South might be due to good relations with the current government (previously culminating in Putin's February visit) and not that bad even with its predecessor, or mistrust of Romania (I recall the Gazprom claims of Ukraine selling gas to Romania during the big spat in January). What might matter more than pipelines (though I wonder what Jérôme can comment about how realistic it is, knowing the sector) is gas storage capacity to be built, which could (a) off-set Ukraine, (b) may be built with Gazprom involvement.
For me, it is also interesting that the sides agreed about supporting an upgrade the gauge-changing/reloading railway station Záhony, a project that also depends on Ukraine, and could possibly concern Poland. *Lunatic*, n. One whose delusions are out of fashion.
You'd feel really at home in a typical evening open thread... Those whom the Gods wish to destroy They first make mad. — Euripides