Well... Some further thoughts then...
To actually have a scaled spell in a Rune - you actually need the Rune Mastery Spell - and so you would need 20 ranks in Rune Mastery Spell instead (no biggie - but an important point).
Wall shield? You allow adventurers to 'carry' those?
But seriously what's the big deal?
Character with quickness bonus of say 10 - has a DB of 20 without armor - with chain or plate mail the quickness bonus goes away. Then if the character has 15 ranks in Boost Quickness, you can get +20 quickness boost. So then the character has a 30 QU which yields a +60 DB. With 19 ranks, +70 DB.
So....
Natural Quickness (Undamped by armor) +10 (DB+20)
Boost Quickness (23 ranks just for fun) +30 (DB+60)
Mage Armor (20 ranks) +60 (DB+60)
Target Shield (no casting penalties) +20
DB 160 AND the INITIATIVE every round.
No DPs wasted on Armor Skill. Unarmored character can climb, swing from ropes, swim, cast spells (bladeturn, minor healing, deflections, etc), mount/unmount horses, change weapons, kiss the princess upon rescue, eat, drink, use the bathroom in a sanitary fashion, etc.
A character in FULL plate (just a breastplate - sure) can't do anything like pull out a scroll quickly (or anything else except shuffle around and fight). Nothing against that - sometimes a tank is useful or required... Especially if that's all you've got.
And I'd still allow it a character to do that given that its no more impressive than the Boost Quickness/Mage Armor combo anyway. And its logically consistent to me.
Admittedly, I don't use the Martial Law charts. I prefer Hack N Slash so the armor 'adjustments' don't matter to me. I prefer combat to be brutish and short I suppose.
No adventurers wear plate mail (or any armor actually) in my campaign. Casting spells at will is more fun and we have significant travel and interaction in urban/rural environments with weather (heat, rain, etc). So plate mail is inconvenient a lot of the time - Boost Quickness and Mage Armor[Steel Skin, Tree Skin] much more convenient and versatile.
My characters FEAR magic, the ambush and numbers.... For good reason... DPs are spent on Perception, Stamina RR, Will RR and Magic RR. Offense and defense are luxuries...
Robin