I really like it already so take this as an alternative, not as improvement:l. I don't have a good eye for aesthetics anyway don't his is more about structure.
Personally I switched from a single dashboard to purpose driven hubs - I can't imagine a situation where I need my infrastructure and my calendar at the same time regularly for example.
Another point is context typing: your release checker is quite far away from your appointments and calendar. It looks to me to be sorted by content rather then function (i.e. it's entertainment so it's next to YouTube). The same is true for your interaction patterns. There is a lot of visual information which I'm sure you'll rarely interact with but instead consume. And then there are clearly external links, both bottom left (opencloud, tooling) and top right (external media) in addition to your own self hosted content.
My suggestion is therefore a process instead of a change: Note down when you consume which features of this awesome dashboard together for a few days. Then restructure the content of the whole dashboard based on your usage patterns - either as a new Monolith or even experimenting with splitting it.
I even suggest using a different medium then your usage device (if it's a desktop PC mainly use pen and paper, if it's your laptop use your phone, if it's your phone you use this dashboard on then you might have different problems :D)