Question about a way to activate upgrades for a computer players units

The way I thought of doing this is

Take some units and use each unit to respresent an upgrade

then I get a building in an area surrounded by hero type units for each player who are able to activate upgrades for the computer player

Then I take the units which represent upgrades and make them avilable to be hired from that building, so then the players can click on the building ( which has select hero skill ) and are able to hire the units.

but instead of them seeing the unit their hiring, they will see the upgrade icon plus a description of what it does ( I edit the units icons and description so it simulates an upgrade icon )

then lets say player 2 blue clicks the +2 to armor upgrade, the unit will be bought that represents the +2 armor upgrade, but as soon as the unit appears it is removed due to my trigger

before the unit is removed a trigger action before the removal action will then activate the +2 armor upgrade for the computer player, then the unit is removed



Is this too much, am I missing an easier way?

any help/comments is appreciated

P.S - at first I was curious if it is possible to make only one building of the computer player as being shared control to the other human players..is this possible?

just wanna try one more time if anyone has comments or suggestions

well the only suggestion i woulda had was to make a dummy upgrade and used the event

unit - finishes research or finishes upgrade

but the more i read what you're doing the less i think it would work in your situation

what im doing is basically a way for players to upgrade their computer controlled ally base in my AOS by armor or damage etc. to heighten strategy