Two issues I see with your line: 1. we've been increasing funding consistently for … forever. It hasn't resulted in improved outcomes. 2. cops don't want better hiring standards (sounds like you want to fire some cops? they don't want that), better use of force standards (sounds like you want to give non-cops more ways to prosecute cops if they break a couple too many noses? nope) 3. de-escalation?? sounds like you want to put cops in the line of fire without proper tools. Nope.
Cops will always and forever defend their right to fuck shit up and not suffer the consequences. Cops will NEVER go for the ideas you suggest, and any money you send them for "training" will only turn into luxe contracts for ex-cops and extra overtime for everyone.
Cops love being cops because of what the institution is now, today. The toxicity, the freedom to do shit without consequences, the lucrative overtime, all of it. And cops are incredibly good at agitating when they are threatened – oh you want to make it so we can't shoot people? Okay we're not going to do any work at all for months. Or maybe we send someone's cousin around the way to scare you – you think that's a problem … call the cops!
The problem imo with the "mostly good people" line is that it ignores the fact that in a harmful institution most "good people" will just go along with whatever is happening. Any "good cop" who speaks up against a fellow cop gets their face bashed in (see the current case in SF where they straight up killed another cop in a training exercise …). Good people in shitty situations can make harmful choices and generally don't do the (very difficult and dangerous) work of speaking up to change things.
Defund. We need something new.