It's priced incredibly well, the 7 seat arrangement will win some over. It also has better performance (on paper) than our IPaces.
While the build quality will be off, the tech will blow our cars out of the water.
I have no idea if a Model Y will hold 7 adults. I have a hunch it would not be my choice for that purpose, unless it's bigger inside than the Model X. Note, the 2 added seats aren't free.
If you do have a larger family, minivans are the way to go. There's even one that runs on electricity for most of it's duties. Or real SUVs seat up to 9. Or is that 10? I think it back down to 9 adults now for the Suburban.
Note that there is a EREV minivan that seats 7 adults, has power doors on both sides, dual rear HDTVs, leather, etc, for $45k before $10k worth of EV incentives in California. THAT's a kidmobile. Until you played with removing kiddyseats through passenger doors, you never really understand why minivans exist.
As far as performance goes, take your I-Pace to an AutoX or a track. You don't have to bother to prep the car or have Team Tesla engineers to assist. It's certainly one of the best handling heavy cars ever sold, I'd put it up with the CTS-V. Certainly a step up from the Model S. It's acceleration is where you need it most, in the passing zone of 30-70mph. It pulls strong to ~122, then the limiter gently derates the power until it caps at 127 mph per my GPS. While it's very well behaved, the I-Pace is actually more car than most people are trained to handle. Which is OK, it is very forgiving.
As far as it's tech blowing away the I-Pace, we will see. Tech is more than Easter Eggs and 'Cowbells'. It's ergonomics, chassis tuning, adaptability, packaging, and how everything is integrated. An I-Pace has more usable interior room than a Model 3, yet it's an inch shorter. And the I-Pace has advanced low-traction abilities that no Tesla offers. Does Tesla even offer a dynamic suspension system (dampening changes based on road conditions) yet? I can't think of a MFR that doesn't today. There is a reason the Jaguar 'feels' good in a bumpy corner, and it's called technology.