The bigger sump in not an option for the reason I mentioned earlier. Your link is for a front sump and my crossmember would run right through the centre of it. Front sumps are good on brakeing but really back on acceleration for the same room reason mine is bad for brakeing. The factory Toyota sumps are well designed and engineered, just like the rest of the engine, it's just I pushing the boundaries.
Accuse people looks like my favourite at the moment. It's only really the occasional hard left handlers I need to protect the engine from. I will set a limiter in the maps that operates a minor fuel cut on very low oil pressure. Then I won't need to keep an eye on it and also protect the engine until I decide which route to take. I will also run a bit more oil.