Personally I have no intention of buying every figure made, I just don't have the space and I'm also collecting the 12" LOTR figures.
There are certain backgroud characters that I do intend to buy and then there is the upcoming "Military line" (I see myself getting quite a few there) but for the most part, I will sit most backgroud characters out.
Take for example "Bib Fortuna"... I find him cool and I am getting him. However, my main reason in doing so is because he completes the entire "Jabba Palace" scene (which I am getting). If I had decided to pass on "Jabba", I would have passed on "Bib" as well. I still would have gotten "Leia - Boushh" though!
At this moment, I can say that I have no interest in characters like "Captain Antillies" or even "Biggs" and "Wedge"... There just not important enough for me.
The problem with "Plo" and why I am undecided is because he's a "Jedi" and what can I say... I like Jedi! I don't plan on getting all the "Jedi" but I do plan on getting quite a few more! If they had announced "Obi Wan" (Ep. IV), "Mara Jade", "Aayla Secura" or "Shaak Ti"... This would have been a no brainer as I really want those characters but do I want "Plo"... I'm not sure? As I previously mentioned, I almost passed on "Kit" but changed my mind at the last moment and now I'm glad I have him!
In the end I think that "personal preferences" will play a big part here for this figure. Though I believe that most of those who passed on "Kit" (and did not regret it) will most likely pass on "Plo" as well.
:emperor