Add Uptime Accumulator between 1 minute and 1 hour

[JohnnyWyles]

Background

Current Uptime Incentive accumulators used are
time.Nanosecond
time.Minute
time.Hour
time.Hour * 24
time.Hour * 24 * 7
time.Hour * 24 * 7 * 2

Early usage has suggested that 1 minute has a minor impact on the width of liquidity, and 1 hour is often too long for new pools with the current frontend design as forfeited incentives are not visible.

Conversely, longer periods are not used as frequently - the one 14 day uptime in use expires 3rd May, all others use 1 min, 1 hour or 1 day.

Suggested Design

Suggesting the addition of a new accumulator between 1 minute and 1 hour
Either 5 min or 15 min.
Ideally another accumulator between 1 hour and 1 day (6 hours) would be available too, however I understand that additional accumulators are resource intensive.

This could be offset by removing 7 and 14 day Uptimes.

We need logic in uptime handler,

• refund if gov prop is created before migration
• this creates linear overhead
• adding a new uptime
• size in terms of scope

Acceptance Criteria

New uptimes able to be set/approved by governance to be set
Existing incentives not broken (This may require a gov prop to remove new 7 and 14 uptimes if required)

[ValarDragon]

Thanks for making this issue. I am in support of adding a new 15 minute one.