They should just do like Smite. Basically, you can make a 'loadout' by having items that you prefer to buy, mostly for convenience. Instead of going to the magical power tab and finding the item, you can just have favorite items (I forgot what they called it since it's been so long), and you can easily go to that. I think they need to do like that, but with slight differences. You should be able to have make an item shop loadout for Io like say:
On Io, I don't like to buy Chronos, yet bot supports rush it. I like to buy Nimble, Resilience, Haven, Master Riding, Cauterize, etc. I think you should be able to make a loadout for those items, and the bot will buy those items instead of just buying whatever. Or at the very least, have bots finish out the item(s) you bought instead of buying something new.