Unity for a 2D MMORPG and GUI

Me and more few guys are wanting to do a simple 2D MMORPG.
Firstly, don’t waste your time talking about how impossible is to do a 2D MMORPG with few people, its doesn’t matter. Sorry if i’m sound rude, but people always want to talk about that.
We already have the Server, and we want to do the Client. We have a lot of options, but we want to develop it really fast, and to do it, we need a framework and a tools already made.
Unity seems really appeal, but there are some problems:

  • Unity Editor is overkill for a 2D game, we will not edit scenes or anything 3D on it, if i understand Unity correctly, we only will use scripting features and only use the Editor to build the game. Of course, we want to use 3D sound, shadders, etc.

  • Immediate GUI seems bad for fast building of a complex layout/GUI( as needed for a MMORPG ).

Is unity a really good option for us build the Client? I have not found any good retained GUI for Unity, and we don’t want to waste time building one.

My questions are simple, is unity suited for 2D MMORPG with a rich GUI with fast prototyping?

My questions are simple, is unity
suited for 2D MMORPG with a rich GUI
with fast prototyping?

Yes.