Oh yeah I had a few ideas on all this, just ran out of time to implement any of them.
I should have balanced it so the less holo helpers you have the more Green power ups spawn, and the more you have, the more Red cancel them out ones. Would have been a lot better. Probably wouldn't have been to much work, but I got stuck polishing up menus and story and getting the WebGL version to work on itch properly.
Could have had the option to buy them in the shop, with a follow up option to upgrade them (so they start as the player does at level 1, and you have to also pay to upgrade their levels. Maybe have a cap on how many you can have via this, that costs a lot to upgrade.
Maybe have them only last for 10-20 seconds, thus stopping the over powered thing that happens when you have 4 (I started with 8 of them before testing :P).
So yeah, think we're on similar pages with it :), just wish I had one more day :P, or the ability to let some of the other stuff be a little less nice :P.