ThirdWizard said:
Here are some sample monsters and their ACs.
We'll assume a starting Str of 16 and with increases we'll say at 11th and 14th level (the first two were for Cha/Int), and a weapon with an enhancement bonus of +1 ever four levels (being conservative I believe).
I'm currently expecting the stat improvements to be more like SAGAs: two different stats at each point, so that you can increase your primary stat each time.
Also, as someone else mentioned, there's the static proficiency bonus. Assuming +2:
Boneshard Skeleton (level 5): AC 17 / Warlord +8 (9+)
Gnoll Huntmaster (level 5): AC 19 / Warlord +8 (11+)
Gnoll Clawfighter (level 6): AC 20 / Warlord +9 (11+)
Bugbear Headreaver (level 7): AC 20 / Warlord +9 (11+)
Gnoll Demonic Scourge (level 8): AC 20 / Warlord +12 (8+)
Gargoyle (level 9): AC 24 / Warlord +12 (12+)
Chuul (level 10): AC 27 / Warlord +13 (14+)
Boneclaw (level 14): AC 30 / Warlord +16 (14+)
Bodak Reaver (level 18): AC 31 / Warlord +20 (11+)
War Devil (level 22): AC 35 / Warlord +23 (12+)
Which also is not really fully scaling, but is pretty close. If you add in leader bufs, that probably scales better.
If I add in a second stat bonus, on the theory that some leader will give you his second stat (14, +2 per 8 levels), then it looks like this:
Boneshard Skeleton (level 5): AC 17 / Warlord +10 (7+)
Gnoll Huntmaster (level 5): AC 19 / Warlord +10 (9+)
Gnoll Clawfighter (level 6): AC 20 / Warlord +11 (9+)
Bugbear Headreaver (level 7): AC 20 / Warlord +11 (9+)
Gnoll Demonic Scourge (level 8): AC 20 / Warlord +15 (5+)
Gargoyle (level 9): AC 24 / Warlord +15 (9+)
Chuul (level 10): AC 27 / Warlord +16 (11+)
Boneclaw (level 14): AC 30 / Warlord +19 (11+)
Bodak Reaver (level 18): AC 31 / Warlord +24 (7+)
War Devil (level 22): AC 35 / Warlord +27 (8+)
Which scales very well. And gives generally pleasing numbers. The only thing I see is that the every 8 levels becomes jumpy, from the +1 weapon, +2 stats, +1 level all hitting at the same time.