It may matter to me. What do you see in your crystal ball? The $5k finally pushed me over the edge to go for the X over the Y. Plaid has been the biggest consideration, but thought that was a ways off for the X.
My crystal ball is cloudy and says "Try Again"
I don't know what the horizon holds, but as a seasoned owner I can only tell you stories of my experience walking uphill both ways in a snow storm. At this point, I've owned 1 ordered car (first) and 2 inventory cars (2nd & 3rd) At one point I touted the discounts of inventory cars; which is why I owned two of them. What I learned was....be patient.
My first inventory car was bought out of impatience. I was waiting for my S.. waiting...and waiting. At the time, the wait was over 3 months long. Two months after ordering the S, I picked up a 2016 MX..AP1. It made no difference to me because AP1 was all I knew. An AP1 was what I test drove initially anyway, plus it had nearly a $30,000 showroom discount. What a DEAL! My S ended up delayed, and came later....with AP2/EAP. Oops. Now I got to experience EAP and eventually AP1 didn't cut it....so I went looking.
I couldn't bring myself to trade in a car I just bought. What's worse is that Tesla was only offering me $40,000 on the X. So I kept it and kept driving it while looking at inventory cars. When free supercharging went away, I checked inventory every day for a car that had free supercharging and finally found one. I scored my black on black, free supercharging at another showroom discount plus it had the just released AP2, it was perfect...
I bought that second inventory car a week before the release of a whole lot of new features including HW2.5. The now standard options wiped out the entirety of the discount I received. I still have free supercharging and free premium connectivity. For about a year and a half I was pretty darn upset, but now there's a MCU2/HW3 upgrade path for me that I'm more comfortable with. It'll just cost me $2500+$4000 to do it. $6500 buys a lot of supercharging and a lot of monthly connectivity payments...
If I would have bought an inventory S, that car might've been traded too. If I would've waited for either X....
But the reality is that these cars are ALWAYs changing. Even if you time it just right and hit the right mark - like we did with our S. It eventually becomes outdated. It just fell the right way for us so that we didn't feel cheated on the S, where as we did on the X. That's a subjective thing and not an objective thing.
For you, if it closes the gap between the Y and the X, go for it. I can tell you that even between the X and the S..the S feels cheap compared to my X. My aha moment was when I was in the driver seat of the S, I turned and said "Why don't these doors close on their own?" Yes, I sounded absurd. But that's what an X does to you...