Thanks for posting your concerns @dev0_sik as we at the Foundation have also been thinking about the situation.
I believe your suggestion for automatic chilling was considered but after some deliberation, there were some concerns that something completely automatic like that might inadvertently cause total network shutdown in some edge cases.
Instead, RT2600 actually includes a feature (enableMarkingOffline) that can be enabled/disabled with governance. Once enabled, it allows anyone to call parachainStaking.notifyInactiveCollator with an address of an inactive collator address. If the collator is truly inactive (there’s some validation there), then it is flagged as offline and effectively chilled. I think this is something that could be enabled on Moonriver along with RT2600 and solve that particular problem.
With regards to the minimum bond, I think lowering to 500 MOVR is a great idea. I believe all the current collator bonds are 500 MOVR or less anyway. We can always re-evaluate down the line if things change. I’d love to hear from other community members on this as well…