What are your criteria?
I first (and only) started buying SW figures again in 1995 so I could recreate all the scenes that were possible with the new realistic figures. So I spend a lot on SW, I'm just not a "collector." I don't have to have everything, like I turned down Darth Revan and Darth Malek recently (don't own them at all, but did find them at retail on several occasions).
I eventually purchased extra figures to hold on to just in case Hasbro made figures I really wanted that they never made before - like Uncle Owen. Thus I had extra Jawas and Droids for a whole Purchase of the Droids scene and now even have the sandcrawler to go with it. I want extra ("non-agressive") Evolutions AOTC Anakins to display with each of the possible Padme figures they might come out with over the years (about 7 more of these - it's a really good figure of him, too).
Do you customize figures to go into your scenes? I started to a while back, but Hasbro is finally catching up so I don't do it any more. I made Kir Kanos and Carnor Jax way back when. I also made the HTTE Luke with his flightsuit top tied around his waist. We have these as official finished figures now. So I'm holding off on doing customs for a while. I'd rather have Hasbro sell me 1 figure, than buy 2 or more to kitbash.
Do you army build? I tend to feel "less is more," and it saves money and space, but I still need to show a larger force outnumbering a smaller one and fill out my ranks. I have a lot of droids and troops for sure.
Do you fleet build? I have the most TIE fighters of any ship, but I do have multiples of many designs.
Anyway, do you make permanent or temporary displays? Do you want permanent ones? How far do you go? Do you just set up the figures, or build them landscapes or even film sets (like the observation tower on the Invisible Hand for the ROTS duel with Count Dooku)?