I think it' s interesting how closely it's beggining to resemble the Convair YB-60. Just lose the turrets (as they would hve done on a modern bomber anyway) and you are almost there. You could always just morph this into a B-60 when you get your B-75 done.
Good to see a modeller in training and the evolution of your skills. I tried to get into one of these programs yrs ago, and I couldn't even write my name after 3 mos of trying. Im impressed.
Re: the gun turrets, the B-36 had 4 top turrets that withdrew into the fuselage, armed with 2 20mm each, two turrets per side. It had a twin 20mm mount in the nose, and of course the twin 20mm in the tail. You rarely see pix of the turrets though. I have (somewhere around here) an old B-36 manual that is huge and had all those details (at least I still hope it's somewhere around here).
I suggest just getting rid of the externally mounted turrets, as the YB-60 deleted those. Also, they would have used 20mm, as .50 was just too inadequate for jets, as was discovered in Korea. Although the USAF stuck to the .50s for quite a while, as the B-52s had them through the G model (though they finally went with the 20mm Vulcan in the H). Note that the Tu-4 B-29 clone had 23mm replacing the .50s in all its turrets. I think changing the calibre would be fairly simple, wouldn't it? would make them far more effective against jets.
One more suggestion and I'll go away....for a bit. Take a look at the Soviet Tu-16 Badger. It had external turrets to begin with, and was a fairly straight forward design with those big engines in the wing roots, and not externally mounted. I don't know how these 3d programs work, but I would bet that might be a bit easier than having to mount pylons. Could you just increase the size and mod the shape of the engines you have now, and insert them into the wing roots of a design, staggered a bit?
Somebody might take a close attempt at that pretty seriously, as such might be very useful in the 56 jet stuff if it were close enough.
Sorry to ask so many questions, but this is really fascinating. I used to do similar stuff, but just drawing, since we didn't have too much computer tech in the 70s. I was one of the first kids in my school to get a calculator. ??? You remind me of me 40 yrs ago.
Oh and don't forget; in the B-36 manual it has the limitations on manuvering with a serious looking -
WARNING: aerobatics in this aircraft are strictly forbidden.
I even thought that was hilarious when I first read that when I was about 12 yrs old.