Now that the events have been running for some time I would like to see some more variety in the types of rewards.
Typical one is a platinum planet booster for +20 fields. Almost every event has one of these.
Why not 5 bronze for an event?
My reasoning: I have put platinum boosters on the planets I need them on. I can't stack the same level of booster so any additional ones either just stay in my inventory or go to planets that already have plenty of fields. It also means that players have more options to spread out the reward.
Same could be said for many other boosters. I would accept 4 bronze boosters in the place of 1 platinum every now and then to have some variety. It could be argued unless you putting boosters on every planet, splitting up a single 40% worth of boost is safer from a production standpoint because you don't have one outlying planet that needs to be resourced saved on a different schedule then the rest.