Bell, 325 at 81.25 (also from four completed innings), has shown he is near to winning back his test spot.
But if the selectors want to find a genuine opening batsman - Adam Parore was promoted to that role in the third and final test in South Africa - Marshall could be sidelined, despite his brave unbeaten 40 on debut.
Craig Spearman, who did not play the third test in South Africa after a largely unproductive tour, would seem to be out of the equation.
If Horne and Richardson are the preferred openers, and if Matthew Sinclair, captain Stephen Fleming, Nathan Astle and Craig McMillan are to fill the rest of the top order, there would be no place for Marshall.
The ability of Astle and McMillan to bowl a few overs might be enough for their survival ahead of the unlucky Marshall.
Parore will drop back to a more customary No 7.
With Daniel Vettori, Dion Nash, Chris Cairns (all recovering from injuries) and Geoff Allott now firmly in the one-day camp, Brooke Walker (a genuine allrounder) and Paul Wiseman will dispute the spin responsibility.
Doull is poised for a return and should join Shayne O'Connor and Chris Martin in a three-pronged pace attack, leaving Daryl Tuffey, Central's Michael Mason, Auckland's Chris Drum and young Wellington allrounder James Franklin to wait for another day.
The likely 12 for the December 26-30 test could be: Horne, Richardson, Sinclair, Fleming, Astle, McMillan, Parore, Walker, Doull, Wiseman, O'Connor and Martin.
Herald 0900 voteline question:
Should Stehpen Fleming be dropped as New Zealand cricket captain?
Ring 0900 700 50, then 1=YES or 2=NO