Reading glasses. I've given in to my age and I use them when I need them. It's best to just leave a pair of readers next to your set-up. I found a pair of fold-up glasses that fit into a case the size of an oversized cigarette lighter. I keep them in my pocket.
The next issue for older eyes would be proper lighting. I love a dimly lit room when I'm being creative. But dim light makes seeing tiny print even harder. For this, I have tree solutions. I placed a large lamp in my music room. I also have a desktop lamp with a gooseneck. The third thing is having a USB charging port connected to the 5v rails in each of my 3 cases (Intellijel). I can then use USB gooseneck reading lamps in my case. But you'll want to check if they inject noise into your signal and pull them before recording.
For rhythmic complexity... I like Euclidean generators. I won't explain them here, but you can find several modules capable of generating them either as dedicated modules or a function within... like the Temps Utile module. I'm also considering buying a second hand Trigger Riot after watching a few videos on it. I really like the idea of creating rhythms by indirectly influencing a parameter than simply just programming them by hand. You can get pretty wild by patching from one Euclidean generator to another, throw in a logic module, and possibly triggering a reset periodically. You can also use/misuse clock dividers to great effect in the chain somewhere. You can also literally mix gates/triggers together at low volume and where they align you'll get a legit trigger (devices like logic modules want to see a minimum voltage to count a signal as being true, so they are great to add to the end of the analog summing to make sure you get clean gates/triggers).