I went from hard self-restrictions to something more like being generally suboptimal on purpose and avoiding doing things I don’t like.
I play on Legend with self-imposed Ironman, which takes care of some things on its own, like excess SP. Also, because I’m always losing operatives and not reloading, they just don’t last that long (my memorial is around 30 strong ; if you sign up with my organization you are usually dead within 2 weeks).
Things I avoid because I find them broken or just no fun:
- Sabotage missions; it’s easy enough to advance diplo status without them, also not fun
- Raids for resources; it just feels broken, not only diplowise but also that they have infinite resources to steal and IIRC they have resources to trade after you steal them. Also, I feel like I’m doing enough missions already.
- Some skill combos, mostly with Rapid Clearance.
- equipment sharing
With that, small teams with at least some low level soldiers and trying stuff that looks fun though might be suboptimal, I mostly manage to get by.