They don't have half as many votes as the 2nd least popular civilization, and no one in this thread who listed all of their picks in order had the Zulu even in their top 5. All but one has had them in the bottom 2.
My list of civs I think I'll like the most (a bit different from civs I find most interesting, as another thread is about):
1. Brazil - Looks like a very open civ that should be able to control the game diplomatically and have a decent shot at winning any way.
2. Portugal - Much like Brazil, but it seems a little more obvious as to the best way to play and unlikely to control the game as well.
3. Morocco - I don't care about the UU or UI, but the UA should be insanely fun.
4. Shoshone - I like the early boost, and it should set them up for a strong late game, but they're a bit bland.
5. Assyria - Why, yes, I did just take your city and Steel with it!
6. Venice - VERY interesting, but I'm not in love.
7. Indonesia - I can get faith after religions have been founded AND spread to my cities near fresh water? The UA is good for island maps...nothing else. UU may be cool, but not amazing.
8. Zulu - They can set themselves up well for a strong mid and late game with the UU and UB combo, but they are a less interesting war option than the science stealing Assyrians or the kris swordsman of Indonesia (who will also get some bonus for clearing area to settle cities on other continents.)
9. Poland - A UB that does little but give (generally poor) units more exp and a bit of cash. A UU that pushes the enemy away from my army. Meh.
Zulu is in my bottom two as well, just barely ahead of Poland. I can honestly imagine myself never using the Zulu, but it might depend on two things.
First, is it really MELEE units only, or is it all units that attack at melee range? There is a distinction between melee and gunpowder units in the game, so I can only assume the Zulu only benefit from reduced maintenance on melee units.
Second, what are these new upgrades and will they be worth getting? They current upgrades are pretty nice, so will I even feel at a disadvantage at equal tech against the Zulu, or will I be able to simply shrug it off?