locked boot - if the phone runs like it should I won't need custom roms
motoblur - i don't see what all the hate is about it's not that bad
no sideloading - there are ways around this even without rooting
gonna have no full ROMs - again if the phone runs like it should I wouldn't need them
Only a 5mp camera - it's not the mp that matter it's the lens. The iPhone 4 has a 5 mp camera and takes pics and video just as good if not better than any 8 mp phone camera.
plasticky cheap body - I'll wait till I hold it to voice an opinion on this.
Now the cons for the Inspire.
No dual core
No ffc
Screen res isn't as good
no notification light
only a 1230mAh battery
not as much RAM
It depends on what each person wants.
You forgot one more pro/con
The Atrix has an HDMI out.
The inspire...does not.

Having said that.... i should set the records traight on on the motoblur/rom thing.
Its not JUST that it has motoblur (can live with that).
Its not JUST that it has a locked bootloaded with locked sideloading and no roms (could live with that).
When you COMBINE motoblur + the locked bootloader...then BAM..thats not something you can live with. "lose/lose"
As far as Sense..it completely rocks compared to motoblur..thats not just my opinion..thats the MAJORITY opinion. But if you dont like it...the HTC will be much easier to root so..that goes in as "win/win"
As far s the battery...granted..i love that 1930...i assume a fair amount of that will be sucked dry by the dual core.
The stand by time for the Inspire is something like 370hrs while the standby time for the atrix is something like 260 (if i recall)..ball park.
Also having sideloading unlocked right out of the box is a huge win for the inspire..while no HDMI output is a huge loss.
The FFC..i say gimmcik..but know it is important to some people.
The fact that the doc is out of the argument now is neither here nor there..(i always considered it a gimmick).
As far as the dual core...even most of the Atrix fans agree that 2.2 wont we multi-threaded....because it IS NOT MULTITRHEADED. We also agree that there wont be any multi-threaded apps till probalby 3q with only a hand full out there by q4..sooo i hate to say it but..that renders that fairly useless (for now).
The added ram is nice....but 512 and up is still plenty. The samsung infuse wont come but with 512 and my 512 on my tegra II gtab seems more than sufficient. The inspire has...768. I am not saying more isnt ALWAYS better (it is)..just doubt that it will be any where NEAR utilized in this iteration (the atrix)
Camera....eh, i dont know..5mp to 8mp i would say they are both good. Lots have to do with the lens and software both they both probably will be nice...depends on if you are a camera fanatic or not.
As far as the screen, ill take 4.3 at a slightly lower resolution ANY DAY. I used to use 17 inch monitors with a max of 1076x800 all day long..and believe me...you can see fine...but you can see MUCH BETTER with a larger screen (the initial inspire reviews have ALREADY said as much). Although if you like your phone more slim line...i could see this being a win in the Atrix column (personal preference but definately not just a "clear win" for the atrix).
I agree 4G is a plus..thats why i avoided the captivate and have waited for these new phones to hit before upgrading.