Just because it is published, doesn't mean it becomes official. Really there is a difference between the two. And for years the Jovian has been rejected precisely because of what it brings to the IN. The fact that Armada came out and it wasn't in there should give you a clue. You should be getting this by now.
Even now, it's proposed to be allowed in a list which restricts it (not enough) and with that you should realize, it is not a ship that IN should be getting. Sig has pointed it out already. It's an AC heavy ship in a fleet list which supposed to be has minimal AC. The Mars or Dictator, hell even the Defiant should have been enough for this list if the fleet list is supposed to be gun heavy.
If we take the stuff from the existing lists, the options should be the Oberon, Ret and Apoc, Vengeance and Avenger. Exorcist available if the Oberon is not available. Armageddon, Overlord and Mars. Surround them with Lunars, Gothics, Tyrants, Endeavors, Endurances and Defiants and improve the Direct Weapon's ability to hit ordnance and there you have Bakka.
I don't know why the non-standard ships have been used. I don't really see the IN needing any of them so it's looking more a case of someone wants to insert them in. If that's the case, then junk Bakka.
As to the second part, I'll help make things clearer for you: people do not take the Defiants because majority thinks they SUCK.
D'Art, congratulations, you've successfully created a list no one will ever play because it is, somehow, even LESS interesting then Vanilla BFG. Seriously, D'Art, this idea is so hoary it's positively Lovecraftian.
This one can be made without even needing a new list using Gothic and the reserve rules except for adding a special rule and possibly a battleship selection for under 2k points.
Now, if anyone would like to play a list NOT unearthed from a cyclopian tomb in an unnamed city in the desert, we can at least TRY OUT what the HA is pushing rather then bitching about these new fangled coal powered contraptions. (What next? Smokeless lanterns?)
As fr as non-standard ships go, some of us have been using them for years already, and found most of them to suck a lot less then might appear at first glance, due to something called 'tactics' rather then depending on list choice to win it for us.
Oh, and, by the way, The majority of people also think that the government captured aliens and a flying saucer at Roswell, NM in the 50's, and that Elvis is still alive.
Engage Rant Mode:
Seriously, and D'Art just tipped over my apple cart again, all I hear out of you people is 'CHANGE SCARES US!' 'NEW SHIPS ARE SCARY!' 'WE DON"T WANT ANYTHING NEW.'
Assuming that you are the correct gender, for the love of GOD GROW A PAIR!
Let me try and spell this out because some people are not getting this.
GROW OR DIE.
Either we grow the game, and get GW to take a second look at it, or the game dies. It's an unpleasant fact, but bluntly, a fanbase can only really keep a game going so long (see D&D 1st ed), until it's eventually just a handful of aging fatbeards sitting around talking about how much better things were before.
Right now, we have a chance most other gaming communities DON'T GET.
Thanks to FFG making the RT RPG, we ACTUALLY might be able to turn this around if someone at GW realizes there might be some interest in this. They've already shown some signs of coming around to this mode of thought with IA 10.
But if we STAY THE SAME we're sunk. Hell, the fluff in our game doesn't even match up with the rest of the 40k fanbase anymore. And, much as some of you might despise them, our hobby needs their support, as THEY'RE the ones that GW is pandering to.
Our existing ships and fleets and etc HAVE NOT DONE THIS.
Rather then sitting here trying to make it stay the same, what we SHOULD be doing is trying to find ways to improve it. If the HA thinks that bringing in non-standard ships will do it, I say: Go For It. Let's try it out. Who gives a flying rat's ass if it changes the flavor of IN if it funnels players from other 40k based games into our camp!?! The 'feel' of IN has not save us thus far, and I'm quite happy to see someone's sacred cow go to the chopping block if it brings in more players.
/rant