S_Trauth wrote:
After having a read of the Isolation optional rules (admittedly for M&P) I am not sure I would really mess with the rule -it seems most entirely geared towards lower level situations like when your line gets blown and you are trapped. Supposedly only your defensive melee strengths are impacted (which I took to mean offensive melee strengths of isolated units are not impacted).
Now I have slightly more experience, I notice that the isolation rules actually work as I suggested. As the honourable S_Trauth mentioned, it only impacts defensive strength, which means that you do get a one turn grace period before you are the defender again.
I still do not particularly like it however, especially in campaign games where it encourages gamey behaviour. This is a snapshot from my current campaign game.

The curassiers are mine (just having chased away some light cavalry), being surrounded by hussars. To me, the hussars are in a worse position, on the wrong end of heavy cavalry. However, I am isolated and the hussars are apparently happy to be in a position like this.
In a campaign game, I do not want to have to fiddle with exact hex placement to avoid being isolated. I just want to get moving until the big battle. As suggested, for lower level games it is probably a good rule. In future, I won't use them for larger battles anymore.