I have a Gubler's nep, and so does Cephalotus88 (i think thats the number after his name), JOIN THE CLUB! Hehehe...
Mine only had a single ugly little 2cm pitcher when i bought it... Are they round bottom with a skinny neck, and the lid is hardly off? Well, my newest pitcher wich isnt open yet, but is already outgrowing the otherone looks different, so dont fret...
Mine started out like yours, maybe worse, but now its growing a new leaf (opend up, and flat) every 3-4 weeks, and they are alwayts long than the last, no kidding!
All I do for mine is fill the bottom of an aquarium up with water, tap is fine... make a little stand in there for your plant so that the water isnt even close (just not touching) the water... Place the plant on top of this stand, and close the lid. Place it in a sunny window, and behold, you should see results in however long it takes a new leaf to open. I dont think that any of the tendrils you have now will pitcher, as i have one left, but i'm not giving up, it might... Water it like this: first, water it over a sink, pur water through, and wait for it to stop dripping. Put it into the terrarium you made, and just water it when it looks thirsty, but never let it sit in ANY amount of water... In this humid environment i only ever water mine about one every two weeks, tho it changes just kuz sometimes i feel like watering it... Just do it when you think it needs it, but remember, wet, not waterlogged!