@riot, Ornn's offensive item upgrades are mediocre compared to support/defensive counterparts
Trinity force should lose the extra mana and spread the gold worth to the other stats, like how abyssal mask doesn't have it's mana increased in the upgraded form. Imagine the tanks reactions if you forced the mana to also be part of the stats that is increased at the cost of the other stats.
Deathcap is still in a state of having a crappy cost and build path in relation to what is given at the end. The item I think needs to have it's cost reduced plus have an improved build path. I would even say it would be better worth to have the AP given reduced but have the passive % value increased. Make the item have it's total value closer to the 3000 gold value in stats and tweat up the passive. That way both the pre/post upgrade is actually worthwhile.
Same this with IE. Everyone that could chose to would desire to have at least some if not all of it's upgraded stat increase to go into crit.
Black cleaver is the only one that would be worth rushing the upgrade, thanks to the simple fair spread of the stats.
Right now the defensive/support item upgrades are in a state of rushing the upgrades while all the offensive items (sans BC) are in a state of upgrading only if you at 6 items + elixir. Frankly the set up of the passive so far feels rather disappointing in its execution for things that should have been rather obvious; lack of lethality item upgrades, poor choice in AP item upgrades (symptom of Dcap being crappy), blatant favoring towards the non damage oriented champs (maybe this blacksmith is just useless at building weapons despite being a forge god).