Direct Fire - OF + Adjacent - +3 Modifier?

[saracv3]

How about this: Unit moves next to enemy resulting in opportunity Fire, thus equaling a +3 modifier. I’ve been playing this way. As ludicrous as it sounds there are times for forcing this issue. But I’m not certain I ever entertained it except against those Italian entrenchments.

One thing is moving from an unseen position like a forest hex onto the next hex in which the enemy suddenly has that opportunity shot.

Comments?