i went to this test ride event since it's quite close.
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rode a few bikes.

spent the most time with the vstrom.
didn't follow the pre-planned route. i took it to some bad roads and gravel agriculture roads around the area.
if you want something for long distance touring, will do 2up with panniers, can do some mild offroad, more power and upgrade from your dominar,
do test ride the vstrom 650. it's not as tall or heavy as 800cc+ midweight
not much power tho. might feel the same as your dominar.
bmw f800gs, bmw f750gs, bmw f850gs. f800gs with the rear tank doesn't feel as heavy as f850gs. f700gs/f650gs is even shorter and lighter.
crf 250 don't make much power and not nice on the highway. topspeed 110-120, lack of power to overtake.
the himalayan and scram 411 don't make a lot of power. heavy clutch. 5 speed gearbox. might feel a downgrade from your dom
i feel the 790 adv is too expensive for the asking price.
no cruise control. non adjustable suspension.
some features like adjustable traction control, slip control you need to get the rally pack or tech pack.
tiger 900 has more features vs 790adv at the same price.
but going past 800cc the accessories and parts price is really on another planet.
you drop the bike offroad and hit a rut or a rock RIP wallet

Yeah..my thoughts exactly. Already tried the Vstrom 650. Decent bike but looking for something lower and lighter.
The 790adventure would be perfect if not for the too high price. You just don't seem to get good value for money. And yes, I agree the tiger 900 on the lower seat setting would be better value ..except for the stupid T plane engine.