It seems very much like a 'build your own quest hub' at this point. I am not as excited for garrisons as I initially was, because I thought there would be a lot more customisation, but it's starting to feel a lot more impersonal.
Would like to add though, that while you may not get to choose which zone to place it in initially, they have said that later on you unlock outposts in all the other zones which are essentially duplicates of your main garrison I believe. So essentially, you can still choose to base yourself elsewhere I guess. Would be better if you could just move it, but I suppose this compromise is cool.
It would have been awesome to have different racial buildings, but the amount of time and resources that it would take to do this would be unreasonable. Besides, we're part of the Horde, and our architecture should reflect that. The buildings of Orgrimmar are not Orcish buildings, they are Horde buildings, representative of all the races. From what I have seen, some of the buildings do have racial themes, for instance the skinning building/tannery is Tauren themed, which becomes more obvious at stage 3.
I am still looking forward to it, because I'm viewing it now as a quest hub that we control. We choose what NPCs to have around, which dailies we have access to, what buildings we have. That sort of control over a questing area is really interesting. We spend a tonne of time in questing hubs anyway, at least garrisons give us control on how we spend our time there. They offer a tonne of utility, and having followers and defending your garrison looks pretty fun too.
It's not quite as customisable as we expected, but I still think it has a lot to offer and we should be open to it. We spent the majority of MoP in the Shrine or at quest hubs. If we're going to spend all our time in a place doing professions or dailies, it would be nice to give that place a lot of depth and some customisation. Garrisons offer that. It's hard to know just how good or bad they'll be until we've spent a few months there. By that point, the novelty may well have worn off, but until then I look forward to them. I realise they're not player housing anymore, but customisable quest hubs, and I'm okay with that.