Glad that NC750 is working out for you! I wished you had disclosed you owned this bike when you started this thread a month back. You could have given us wisdom on the Optimal Bike Weight topic right from the start!
You are correct, I've never ridden the bike, only really followed the original NC700. Not sure the 750 is for sale in USA. Reminds more of a big scooter with the DCT. Tests put NC750 weight at 229 kgs. and 54 HP. Cost is about $10,000 usd. (£6800)
Reviews I've read on the NC700/750 voiced several complaints beyond the subjective judgement of the reviewer that his Coffee Maker has more personality.(Visor Down)

Complaints continued, pointing out a wonky chassis, marginal brakes and the Auto clutch trans was not always in the right gear. But a lot to like too ... pottering round, comfy, smooth but uninspiring.
My worry would be that all that plastic would explode when you flip it into a ditch at just 20 mph. Even a low side might be bad news? What's a new set cost?
That's just one of many reasons why, IMHO, it may not be an ideal Adventure travel bike. As a street only machine, I'm sure it's fine. Glad you're having a ball ... that's what it's all about.
The 17" front tire is another reason I won't be riding one. Wide street tires really suck on gravel or dirt roads, add ruts, mud and loose rocks ... good luck. Been there, done that. No bueno.
As a quick comparo ... Honda XR650L and DR650 both weigh 147 kgs. dry. Think about power to weight ratio here compared to your NC. Now add enough luggage to go cross continent.
XR-L and DR650 cost around $6000 USD new, but can be had all day for $3500 for near mint used ones. The best thing about both are how indestructible they are. They crash well, easy, cheap to repair.
No, the DR and XR-L will not be as comfortable as your NX and fewer creature comforts, and I do love the NC fuel economy.

Test I read quoted 55 MPG. My DR gets 50 MPG.
So, to answer your question ... yes, to me it's both a bit heavy and a bit on the expensive side. Aesthetics aside (which put off many riders) it seems to have a few negatives. I've never seen one here in San Fran area ... but could mistake it for a big scooter.