Scheldt '44 - Realism versus Playability?

[Kool Kat]

Gents: 

My third PBeM Scheldt '44 game is underway. I am reserving judgement on the game, but there are characteristics and themes that are becoming evident.

Lots of fixed units. Limited tactical options. Unit progress measured in inches and few casualties per turn. Poor-to-terrible Allied and German units' morale. Supply / fuel shortages.

It may be historical, but it translates into players having long stretches of game with little-to-nothing to do and few tactical options. 

Is the goal to re-create a historical simulation that does not deviate from history or a game that allows players to make decisions on how to use and deploy their units? 

Certainly, units should be deployed in their historical starting / set-up areas. Large caliber shore batteries / artillery should remain fixed. Naval and air support should be available on their historical availability dates / times. Reinforcements should arrive on their historically scheduled dates / times. Supply and morale levels should be accurate. But, other combat units had the capability to move. Why not allow players to re-deploy or move these units as they see fit? Is it a play balance consideration?

Hopefully Mike P. will weigh in with his thoughts.

Thanks.