As long as realtime is only an option and WeGo is fully available I am happy.
Let me explain why realtime (RT) is not a great thing. If we weren't simulating multiple command levels and/or having to handle details unrelated to command levels outside of a paticular selected level then RT would be ok. But the reality is we are acting as company commander (if not battalion), platoon leader, squad leader, and maybe even fireteam leader/tank commander. Doing this in realtime is not only UNrealistic it is impossible. As one thing happens at the 'top' of the map something else is happening at the 'bottom'. It is simply impossible to be in two places at the same time to command OR observe. Think of two tank fires happening at the same time at the top and bottom of the map. You simply can't be in both places at once to see a tank pop into view, kill your tank, and pop out. Pausing can make it a bit more workable but you may still miss out on critical actions and not even know it (again if you're watching action at spot A you can't be doing ANYthing at spot . This situation can be helped (but not remedied) with a 'rewind' feature but BF has stated this will not be there. Pausing realtime is simply not good enough; a player will miss out on a lot of action especially as things get exciting in one particular spot.
With the current CM games I find myself rewinding four or five times a turn on certain critical turns to absorb all the action that happened in one minute. What killed my tank? Where did that unit go? Where did that come from? How did he end up there?! I have 'Highway to the Reich' and like it a lot but my biggest quibble is that while I am messing with a battle up in Arnhem my attack down in Grave gets clobbered and I have no idea what happened; and that game at least gives a small 'log' of what happens to each unit.
If you could 'rewind' realtime and react somehow that would be great but how? At the top of the map X happens and at the bottom Y happens. You rewind to see what and decide to change an order at Y to respond. You've now just 'changed time' and what is the impact on X? Furthermore now you possibly already know something you would not have known if you didn't rewind. Thus your Sherman moves up and gets killed by a Tiger so you rewind and stop the Sherman before it crests the hill. Well that's not right.
So, for me, realtime without a rewind is a no-go except for maybe the smallest scenarios. WeGo is the only answer unless you want to lock yourself to a particular portion of the battle or simply don't mind missing out on half of the fun. Some folks might not mind missing out on half of the action but I hope the game never makes that mandatory.