While I enjoy the motivating nature of posting a finished to-do every day, including a streak leaderboard, I value the exchange between indie hackers more.
That includes comments on posts and even more so the "Discuss" feature, and it's post: https://wip.co/posts
Especially the "Most helpful this month" leaderboard can be another good motivator to engage.

I believe that the feature is underutilized and a bit hidden, with only a small widget showing the 4 newest posts on the main page. And I feel like most people don't bother checking out the icons of the navigation regularly.
Most people don't even know there is a map, meetups, a meeting room feature and a Telegram bot and group 😅
The latter feels like the most active part of the community right now.

In the last year, it felt like the amount of direct interaction and discussion went down quite a bit. There also hasn't been a meetup in quite some time, virtual or in-person.
This seems to happen in more places, not just wip.co. For example, Nomads.com/Nomadlist.com, but also other communities.
Communities find other and new places, like https://hacka.network/

I would love for the community discussion part to become more relevant on here. People supporting other people.
And like with video games that multiplied experience points necessary to level up, when another player rated you as helpful and friendly, I think there can be incentives supporting it.

Making discussions more visible, adding the leaderboard to the front page, counting comments in a discussion or under posts towards the streak as well. The same for starting a discussion topic.
Maybe the most helpful person of the month would earn a month of free pro or a streak freeze.
There might be more incentives or approaches to make this happen.

It was just a spontaneous thought :)