It's a good start, a good concept, but at this point, there is nothing in the model that actually sells its size. Take a look at the Sathanas HTLs, and how they break up the big shapes in order to give the impression of size and massiveness; While this is something that the texture has to do the heavy lifting on in many ways, the model has to do its part too; calling the front or the neck parts "fairly detailed" is premature at this juncture.
Also, and this is a more general note, expecting people to pick up and finish your models or use them in a campaign isn't a good way to build interest in your work. When you're saying " However, the rear part needs to be worked. I would do it myself, but I know using sub-division modelling to increase poly counts only make it inefficient (I'm sure Esarai and Betrayal will do it, with the latter finishes the Raguel first).", it can easily be interpreted as "I know there are issues that need to be worked out with this model, but I'm not even going to attempt to fix them myself", which leaves me at least with an unfavourable impression of you, your skills, and your work ethos.
Basically, what I'm trying to say is, don't just put things like "I'm sure Esarai and Betrayal will finish this" or "Woomeister will like this so much that it's sure to find a place in the next Inferno" in your posts when you have absolutely no idea whether any of these things are true. You don't know whether Esarai or Betrayal will have the time or interest to work on this. You have no idea whether there's room in whatever Woomeister is planning for Inferno for this ship.
I understand the desire to build excitement for your work. But let it build naturally, based purely on what you, and whoever you're actually and actively working with on the project can do, not based on what a dream team of people you wish to work with can do.