Cromwell observation post
Cromwell IV, Cromwell VI, or Cromwell VIII fitted with extra radio equipment; 2 x No. 19 and 2 x No. 38 (portable) radios. The main gun was retained.[46] 
Panzerbeobachtungswagen IV Ausf. J - #27 by Kriegerfaust007-live
Would have to nerf the gun leaving it with only the hull mounted MG. Decrease ammo storage to take into account the increased numbers of radios. Artillery on a separate countdown taking longer to call in further strikes over a smaller area. Would love to see a sherma but the us seem to have paid less attention and having a sherman with artillery but no cannon would not work in enlisted. 