So we now know and have quite sound evidence for;
Reeva being 'scared' of OP.
Reeva being 'scared out of her mind' by OP.
Reeva calling her mom to tell her OP was 'scaring' her by the way he drove.
OP apologising for his unreasonable behaviour and so admitting it, while blaming it on outside factors.
Sam Taylor witnessing screaming, sudden temper outbursts by OP.
Two friends (Brit witness not called so far) witnessing OP deliberately firing a gun off in a restaurant crowded with people who might have been killed. One person sustaining injuries from it, and a ballistics expert testifying that OP almost certainly had to have fired it deliberately ( if he knew anything about guns). The injury inflicted on a young, strong, good looking boxer whose very existence may have challenged the insecure OP.
OP attempting to lie and conspire to obstruct justice about that incident. Persuading four people to lie, including Reeva who was not even there.
A weapon training witness testifying OP did know all about guns.
OP firing out of a sunroof, following an altercation with authorities who quesioned his behaviour. In a way he must have known might have killed the occupants of the vehicle. (according to ballisics expert again).
Evidence of a growing obsession with deadly weapons designed to kill, and how to fire them. As well as purchasing ammunition no longer commercially produced, and specifically designed to kill, not injure.
OP demonstrating willingness to break the law to indulge his obsession, as he did not have a license when her made the purchase order for weapons.
Evidence of increasing paranoia ( almost shooting the washing machine)
Evidence of willingness to appropriate blame to 'others' or 'other factors' for his own dangerous actions.
Evidence of an ability to think very fast to cover up his wrongdoings (restaurant, sunroof, text to Reeva).
Some evidence of a disintegrating mental state, with the house falling into disrepair, despite (probably) OP having funds to maintain it.
What is missing in my opinion, so far, is any evidence he was willing to kill someone who thwarted/challenged him. Apart from the restaurant, where I think there is a good case that he deliberately attempted to injure the young boxer.