From what I've been told, all FineCast redo's are exactly the same scale. The Treebeard scale seems to have been driven by the size of the Hobbits sitting with him. I didn't mind because it looked pretty good scale with the Trolls and Orcs. When they did the new "Ent" ( /trying hard not to allow the sculpt to appear in my mind
) GW didn't bother too much with scale (or proportion, or face, or pose, or...). So the FC Treebeard should still be the same size as the original metal one.
With a few exceptions (the first Arwen will give me nightmares forever) I have loved every model GW has done that was based on PJ's imaging of Middle Earth. GW's own creations have been far closer to a 50/50 as they keep seeming to run home to their 40K roots whenever they didn't have something specific to look at.
There are many things about FC that initially excited me. Having done some customization work on a metal Mordor Troll, I'll say I was very much looking forward to having a better material to work with on larger models. But the price increases and (to a lesser degree for me) the cast quality issues drove me away from GW as a supplier.
I have been collecting and playing GW LotR for about 7 years now. This is not only my own 'fun money' (which as the father of 3 is understandably limited) but also GW LotR models pretty much dominated all birthday and Christmas wish lists for me for the better part of that time. Most that know me also know that I'm a big supporter of my local independent store. Even though most GW stuff can be found cheaper online if I was getting anything new I would get it thru my store so they could get at least a little profit. So I'm saddened that my choice to stop collecting from GW has had some negative impact on them as well (though I switched over to historical wargames for most new spending and they're my source for that).
I have a very large backlog of GW LotR stuff. I'm also still getting things I want but I'm getting it thru the secondary market from players that are no longer interested themselves. There are a couple things I may eventually order new because I really want them and can't find them over time second hand, but that will be a point of last resort. And if it's one of GW's stupid direct-only purchases then I'll pass all together (as I said, if I'm screwed dealing with GW then I at least want my LGS to benefit).
I really enjoy the SBG rule system and love how PJ presented Middle Earth to us (I am a Tolkien fan above a collector or gamer). So GW's license for the movies and their generally good job of bringing those minis to us looking like they came from the film has been very exciting for me...up until about a year ago. It's sad that they are the only source for what I want and THAT, not customer loyalty, is why they have a market still in my opinion. There has been nothing they have released since the cut over to FineCast and price increases at that time which I feel is worth the money new as long as I have any other place to put my hobby funds.