I've just been trying the new no-wall idea (courtesy of Pode's idea) and I think it's the best solution we've got to combat the loadgame bug and the terrible siege AI. Offensively, the AI doesn't charge its forces recklessly like it does when there's a breach or pre-opened gates in vanilla. Defensively, it also offers the best challenge that I've seen. This is mainly because the ease at which one can defend and attack the AI when walls are involved is removed!

The only issue I can see is the immediate attack that one can do on cities, but then I guess that's possible anyway when things like onagers become available. On top of that, the AI can do it to you as well as you to the AI.

Thumbs up Pode.

This thread's a tribute to you, and to stimulate discussion on the idea.