I cannot image how the rewards will be distributed among the valid submissions.
But I think it is not a good idea to consume all the rewards. The rewards should be accumulated for next round if no enough valid submissions.
For example, A1 reward is 1–10. If there is only 1 valid submission, the rewards should not be spent all (10SDN)
Great idea, I would suggest to add participation or organization of events (physical and digital) like ETHCC, (DOTCC ? ), Polkadot Decoded to the section A4 | Organize a meetup about Astar / Shiden. e.g., Zoom meeting, AMA
For C2 | Community Management, I don’t know how the rewards will be calculated but they should be proportional to the seniority of the ambassador. We could use a ratio like x0,5 < 3 months, x1 <6 months, x1.5 <12 months etc.