Wow, that's a lot of replies!
I don't think many/any people vape like I do, I let vapor drift into my mouth for over 5seconds, let it swirl around, then blow it out, most of it doesn't get to my throat, almost none to my lungs. (Pointless... I know)
Any amount of draw pressure is ruining that effect.
In my experience, restricted direct lung are usually tight with a lot of could production, as opposed to very loose but a small amount of cloud production. While Loose MTL really means its Loose "for a" MTL tank, still tighter than a restricted DL.
As far as the style of tanks you're all suggesting, the nearest thing I've found the Damn Vape Freesia, it's a hybrid MTL/DTL, it can have a huge open intake, but all of the air still passes though a tube in the 510 pin. I don't have a frame of reference if its a lot or a little. It seems like it would be looser than most MTL/ RDL tanks.
(air flow pin)