Use to have a XT-3 alongside the the XT-30 but sold the XT-3 before the T4 come out with the intention of getting a T4. Still haven't got a T4 and probably wont till next year now. So safe to say I really like the XT-30.
Drawbacks no weather sealing but Im out in all weather with mine and its been fine.
The LCD screen does not tilt in portrait mode and now I do miss that.
Love the weight, my go to Landscape kit is T30 the 10-24, 35mm f2 and the 55-200 haven't weighed it but less the 1.5 kg Im guessing.
Size is a very personal preference a lot find it to small but I splash out and brought a Smallrig L bracket, not cheap but for me well worth it.
The viewfinder is not so good as the T3 and I found it a problem wearing glasses but I got one of these
https://www.amazon.co.uk/gp/product/B07PWM5T72/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&psc=1 and that sorted it for me.
I like the 2 separate BRKT on the mode daily it means I can have one set up to exposure bracketing and one on focus bracketing and just pick one on the flick of the switch.
No dedicated ISO dial but I got it programmed to the rear command dial - just press the rotate to get where I want.
I found the real difference in the AF between them.
The main thing is I would say is the size a lot of people find them to small and fiddle so if you can try one it might be worth it before you splash out.
Another plus for me is the auto mode switch if Im out with the wife and she wants someone to take a picture of us just flick to auto and its a point and shoot - mind you that was pre Covid 19