Hate to burst your bubble, but honestly, I don`t think very much, if any, investment potential. The set design has been almost cookie-cutted, with minor changes, over and over again. There really isn`t too much to this set that makes it "desirable" in comparison to the many similar versions out there. 9494 is probably retired now, and has/is being replaced with this model (75038), which as you can see by looking at it just illustrates my point. Same ship, tiny changes, different paint job, not very much investment value or desirability for previous versions. One more thing to note is the mini figures. 9494 has several, but 3 are very common (neimoidian, droid, r2-d2) and the remaining two are also common, but have some small details changed. Every Lego SW collector and his/her dog has some version of Anakin and Obi-wan, making these figures desired only by completists (for the most part).
Bottom line, most just by what is on the market. Many consumers of Lego are parents, grandparents, the target audience, kids, then there are collectors, AFOLs, investors, and a whole whack of others. Only reason I mention that is to say that pretty much the only people who will want this set now that is is (presumably) EOL are the last few groups mentioned who missed the opportunity to get them. Pretty much everyone else is going to go for 75038 as it is soon to be readily available. That does mean 9494 is a bad set, it`s just that there is little need for people to buy it now that EOL is coming. It does not offer very much more then 75038, and it is less money, so why should people pay a premium?
So to recap: remake, very similar to previous models, minimal desirable mini figures, and 75038 replacing it = not very much desirability and thus little investment value. That`s just how I look at it. Value will remain constant, and rise slightly with age. I`d be very, very surprised if it went any other way.