1) spells on items
a) tooltips about spellstriking and spellholding (procs on crits, x per encounter/rest?)
b) tooltips about variant of spell that is on item for ease of acces and as often they differ from base spell
(exapmple Whispers of Treason on Munacra Arret helmet and Spirit Spiral bracers have range of 20 m vs cyphers 7 m)
b-2) Summoning items(figurines and cloak) and spells tooltip showing summoned creatures stats and abilities (since they are combat only items, no way of testing/comparing items outside combat)

2) item enchantments
a) overbearing/stunning duration
b) speed (x1.2 speed) how much is it, how does average speed weapon with speed enchantment compare to fast weapon with no enchantment
c) regeneration (Trollhide belt, He carries many Scars Armor) +1 endurance per how much seconds

d) Bashing- what speed it has?

e) shields supposedly slow recovery(menitioned in loading screen, not in shield description), by how much if at all?
f) Second chance tooltip (1 per encounter, what % of endurance, or is it fixed endurance)

g) Cloak of tierles Defender, modifies Constant recovery by how much?

h) herald (Outworn Buckler,Little Saviour) and Harbringer(Redfield) aura area?

i) Retaliation (Sanguine plate and others) damage based on what (primary attack, full attack, fixed damage?)

j) interfeering(hatched base property +5 deflection) vs interfeering enchantment (Elaven Ein and possibly others, -5 accuracy on hit for 5 ses)

k) stunning, overbearing, disorienting and interfeering dfurations influenced by int or not?

l) Healing bonus items: bonus on healing done or recieved

3) Character Sheet:
a) attack speed
b) base (non weapon accuracy) which is used for spells, scrolls (traps?) and similar

d) situational defence bonuses (vs spells, vs prone... from items and talents)

3) Cclopedia
a) missing enchantment descriptions from points 1) and 2)
b) list of wizard/cleric/druid/cypher/chanter spells per class per level
c) woedica's judge/headsman entries


X)

Bracers of spirtual power (spell damage multiplier)- havent noticed any change in spell description when equipped

(there are more items and talents missing observeable effect (outside maybe combat log) like this)

Bump

There are at least two cloaks, one unique one and one generic one, that gives an Aura of Stealth, increasing Stealth by +1 (...wee).

The range of the aura is unlisted. The aura itself also do not behave like other auras, but counts as an item bonus, which makes sense, but is counter-intuitive. My proposal is to not call it an aura.

since we are getting stash changes in 1.05, dont know if something simillar is being implemented but:

4) Stash: seperate compartment/tab/filter for items we dont want to sell (the items we put  in there dont show up in other filters)

ba-bump

Nyssia Silversmith and Ishgwnan backer NPCs are placed so parymembers moving from the bartender to the stairs out often(almost always in 2 playtroughs) get stuck on them, requering manualy moving them around. I suggest moving those two npcs closer to a wall (or to some other place in Celestial Sapling) so they dont block the way

http://forums.obsidian.net/topic/79109-celestial-sapling-backer-npc-placement-blocking-pathfinding/

Totally agree with this. Good list. Add the Catform of the druid, not information about how long is it or how fast are the attacks (damage can be seen in combat, it should be seen in teh tooltip).