I might wait, and could well see Model Y as an option, but Model Y seems likely a long time away. It seems quite probable to me I-Pace and e-tron quattro Sportback, and possibly others, will be available for me to buy before Model Y - even if Model Y comes out at a similar time, Tesla being Tesla means that European customers likely won't see it for a year. Also, I already have a Tesla, another brand might offer some unique benefits too...
Yes, this one is an American vs. European thing. You guys get Teslas and Bolts first, we get our Brits and Germans first. That's just the way it goes...
I still have a Model 3 reservation too. We shall see what is available once that opens up for European orders. It doesn't really excite me, though, not as much as I-Pace does. A small sedan is not really what I fancy in a car. A small hatchback would be more interesting. Yes, this one too is an American vs. European thing.
I'm totally undecided, though. The three-year wait-list wait for Model X left me emotionally spent. I'm not looking forward to committing to anything else (mentally or otherwise) anytime soon...