That's interesting about the Darien. The older ones all came with both zippers. Both the Stich fleece liner and my Gerbing heated jacket liner would zip in to my cira '02 Darien jacket. Now the second zipper is an option that must be checked when ordering to get it.
Honestly, I think your 'Give warmth (w/o electric) til ~ 30F' point is subjective, and unrealistic. Buy an electric jacket liner. Rule #1, if you put it on, plug it in. You don't have to turn it on to benefit from additional warmth and if you need it, you dial in some heat. And forget what ever controller comes offered with what ever you buy, get a Heat-Troller from Warm n Safe and use that instead. Others are not the same.
In practical use of the Darien, if you zipped the liner or heated liner in, it made it easier to remove both as a unit. However, the single main zipper then allowed more cold/air bleed into the body than if you zipped the liner up itself and wore the Darien over it, zipped to itself. If i was riding in sub 30's, I always put the liner on as a separate unit, zipped it up, then put on the Darien.
Check out Olympia & Firstgear stuff too. A bit lower price point, but still good gear. The
Firstgear Kathmandu Jacket has been popular for a long time for good reasons. Alpinestar, Rev-it and others are out there.
Define what you want, like 3/4 length or waist length, venting, water proof or water proof liner/exo shell and go sift thru the offerings. In terms of Goretex or similar, fully waterproof gear with venting and a removable 'warm' liner, there aren't a whole lot of options.
I like full length zippers on pants legs. Klim doesn't do that. I prefer 3/4 length jackets, so the Darien and the Klim Latitude worked for me. But neither come with a 'warm' liner, so it's tough to keep jacket and pants under $1000 with both those brands.
Not all gear is sized as over wear. Especially pants. Make sure you read carefully to see if they are "over pants" which will be sized to fit over clothing, or just rider pants worn over LDComfort or other under garments.
Oh, and "waterproof pockets" is a tricky one. Even Klim's outer pockets on a full Goretex jacket are not "waterproof". BTDTGotaNewCamera.
And if you ask them, they get real cagey about why that is. Some Klim jackets come with a waterproof bag to clip to a pocket lanyard.
The inner chest pockets on the Darien and Klim jackets have kept my contents dry. Otherwise, put the wallet in a zip lock baggie for any pants pocket.
edit - "work for dirt and pavement" Define that a bit more please. True dirt gear would be more armored and that's a penalty in weight and comfort that not everyone is willing to make. And sometimes cost as well. Klim Badlands Pro comes to mind.
Most serious dirt guys seem to not ride in the rain and wear jerseys over exo-armor with similar on the pants. Perhaps you're thinking more of Adventure Gear? Basically this means armor and vents with either a waterproof shell or a waterproof liner. Some liners can be worn under or over the jacket. I have an Olympia mesh jacket with that feature. It's less than optimal for LD riding as you have to stop and put the rain liner on. Thus the popularity of jackets with a goretex or similar membrane in the shell and venting. Zip up or un-zip to adjust to ambient temps and conditions w/o having to pack a rain set.