OMP is great to get started with, there's a whole bunch of stuff in there but it's mostly optional and turned off by default (like the memory backend). You can always try it and create a custom Pi config with only the stuff that you find useful if it's too much.

I'm really enjoying the advisor mode (you can have a second model monitor the output of the primary model and have it "steer" the primary when it makes a mistake or goes off the rails) and the automatic fallback to a second provider if the primary one has issues (Deepseek had some issues yesterday).

I need to dive a bit into the system prompt to see how much context OMP actually adds. I think the system prompt is still 2-3k tokens but that probably depends on bells and whistles.