What would be your first mods on the GR Corolla?

I'd probably be doing coilovers, tint, exhaust, wheels, and a tune.

Tint and clear bra.

Wheels, suspension, tint

The usual:

1.) Paint correction
2.) Full ("custom", wrapped edges,) matte PPF over the Heavy Metal color, maybe gloss for the roof (depending on its natural finish)
3.) Ceramic coating for the brakes, wheels, etc.
4.) Ceramic window tint
5.) Lanoguard (or similar) protection underneath
6.) Interior protection products application
7.) Dash cameras and backup (parked recording) batteries
8.) Blendmounts for the front dash camera and windshield mount radar detector. Rear view mirror swap, if nessasry, for Blendmounts and features such as Homelink.

The CGR(Ci) specific:

9.) Shift knob replacement
10.) OEM replacement steering wheel wrapped in Brin Naub sude
11.) Floor Mats, cargo liner, cargo management, roadside kit
12.) Try to source OEM Core/matte front/rear bumper bits to replace the gloss ones
13.) Explore any "offical" GR accessories
14.) Android box (with Apple Carplay interface) so that additional guages may be displayed on the multimedia screen (with wireless OBDII dongle and related app)
15.) Lightweight wheels and better tires
16.) Matte PPF screen protector
17.) Explore options for protecting glossy interior bits such as on the door cards, maybe matte PPF.
18.) Ti exhaust (with OEM like valve), custom fabricated from TICON bits if a quaility aftermarket option isn't yet available. Wireless remote exhaust valve controller

I'm hoping I won't be compelled to do much more than this, but will see what if anything I think needs addressed, and what the aftermarket offers. I'll want be minimally impactful to warranty and the ability to easily return to 100% OEM configuration. Most of what I plan to do initially is for protection/preservation, and a bit for aesthetics. No doubt we'll see plenty of aftermarket support and perfomance modifications, but I'll be trying not to sink to much into this as I imagine more desirable variants will be released in the future and I'll likely want to swap to the final offering at that point.

1) Ceramic coating then clear bra
2) Window tinting
3) Mud flaps if available

Usually folks choose to PPF then ceramic coat. Are you planning to ceramic coat under the PPF?

Sorry I should have clarified, I meant to wait a few years after ceramic coating before applying clear bra. It's going to be a weekend car and probably not driven much for the first couple of years. But you're right if I did it back to back I would do clear bra first then coat the whole thing.

That makes sense.

Tint Rear windows
Dashcam
All Weather Mats

1) Dash cams are a must have these days.
2) PPF full front, door pockets and the top of the rear bumper.
3) All-weather mats and trunk mat.
4) Different spoiler if I can't get the launch edition.
5) Black out all the chrome badges.