Ohmwrecker and Zz'Rot Portal

I realized that Ohmwrecker is the least commonly used item in the game. Zz'rot is not far behind in the list. So I spent some time theorycrafting and this is what I came up with.

Raptor's Cloak: Point Runner now activates near dragon and baron pit <------------------- 40 armor (worth 800 gold) 150% health regen (worth 540 gold) Built from Chain Vest and Rejuvenation Bead Total cost: 1300 gold (combine cost 270 gold) worth 1340 gold (103.1% gold efficient)

This item's gold efficiency is off the charts (nearly 122% in 5.16). Changes such as this could make the item easier to build by lowering the combine cost, while also bringing its gold efficiency in check. A major problem of this item's passive is that it doesn't help with late game-objectives like Dragon and Baron. If this problem was resolved, this item and its upgrades could be much more viable to build. The movement speed around Dragon and Baron pits would also help with roaming between lanes.

Ohmwrecker: 50 armor (worth 1000 gold) 450 health (worth 1200 gold) 150% health regen (worth 540 gold)

Built from Raptor's Cloak and Giant's Belt Total cost: 2700 (combine cost 400 gold) worth 2740 gold (101.5% gold efficient)

Unique Active: Summon a tower for 10 seconds on the ruins of a destroyed tower or disable an enemy tower but make it invulnerable for 4 seconds (cannot be used on the same tower for 30 seconds) (cannot summon towersin front of enemy nexus) (120 second cooldown).

This item needs more health to be worth picking up as a health/armor item over Randuin's Omen , Sunfire Cape , or Deadman's Plate . The active could also be used to defend against sieges by reviving towers. Letting the active create towers also gives the item more power late game when there are fewer towers remaining. Buffing the duration of the tower disable lets this item be more effective at helping to tower dive, while making the tower invulnerable prevents this item from being used for splitpushing (which is more Zz'rot Portal's job). However, if it could be used rapidly in succession on a tower in dive comps, this item could be way OP. Summoning towers in front of the enemy nexus would make it impossible to defend nexus at all, so this should not be allowed.

Zz'rot Portal: 45 armor (worth 900 gold) 45 mr (worth 810 gold) 250 health (worth 668 gold) 150% regen (worth 540 gold) 10% CDR (worth 317 gold) same passive and active Built from Raptor's Cloak , Negatron Cloak , and Kindlegem Total cost: 3200 gold (combine cost 250 gold) worth 3235 gold (101.1% gold efficient)

This item's defensive stats were kind of weird, so making an item that gave health, armor, mr, and health regen would give some general tankiness. Its high price keeps it from being oppressive, as does its stats being inferior to items targeted at a specific type of damage. Moving the Kindlegem to this item (instead of Ohmwrecker )would let it be more useful in combat by having CDR. The active as of now seems to be fine, but the stats hold the item back by being too similar to Guardian Angel without giving the extra life.

I would love to see what Riot thinks about this.