I spent time a few months ago designing a quite powerful and very flexible solution for my clients to handle either OKRs or Goals/KPIs (and initiatives generally), that is quick to implement and maintain weekly or monthly, and works company-wide with roll-ups at the company- and department-levels. An optional third tier, sub-department-level, is optionally available too.
Unlike both Goals and Portfolios, which both require the Business tier, this solution only requires Premium, and still includes an integrated Timeline view.
I know it’s not so nice of me to tease this without offering the solution here, but I have provided quite a few answers on this Forum over the years, and also offer the free Asana2Go (which itself provides another alternative–Project Dashboards–that could be helpful here too) so I hope I can be excused for asking anyone interested in this OKRs solution to private message me here or contact me via my profile (click on my avatar) for more info.
Thanks,
Larry