MV,
Well done for keeping the Knights going. I'm generally happy with what you have done and are keen to get a game in soon with the new changes.
If I may add my 2 cents in addition to what has been covered already...
*Knight Speeds
I think the Errant is off at 30cm, I'd say not as fast as Lancer but greater than or equal to paladin so 20/25cm. Based on look of model and stats in other versions of game.
*Paladin AC vs HBs
Looking at both plastic and metal Paladin models in front of me, I can't see a WYSIWYG argument for either. I'd stick with AC for now as the AC is probably a good "generic" secondry weapon stat to keep for balance and is simple to model for potential proxie/conversions.
*Castellan Gatling Cannon:
My suggestion to balance Castellan off againsts Crusaders superior AT is to give it a couple more shots but with less effectiveness. Therefore the Crusader picks off armoured targets whilst the Castellan sprays the area in the hope of getting kills. Proposed stats: Gatling Autocannon 45cm 4x AP5+/AT6+ -
Another option would be to add AA to the Castellan Gatling Cannon? I'm not as keen on this but it could potentially use its weapons high rate of fire as a poor AA weapon.
*Warden
Like the extra wpn addition here and will be planning on using it for my AA cover. May I suggest alternate wording in the notes such as "Warden may have only 1 of the following Battle Cannon/Frag Launcher/Ballista Cannon" current wording appears a carry over from 2 option warden.
*Armiger Sentinels
Like the look of these!
*Aircraft
I love the idea of changing the marauder bomber for the lightning. Also, modern Fighter Jocks and Cav/Tank officers have a tendancy for arrogance and both would consider themselves above infantry

(please.. no hate mail.. you know its true

)
I could see knights and thunderbolt/lightning pilots in the same sterotypes.
Keep up the good work. Now for me to get painting!
Geoff