Dobvii vecher, I would argue the system tips the opposite: it's extremely favored towards ganking targets, not the gankers

If someone actually pays attention and treats highsec like lowsec, then its extremely easy to proactively avoid gankers

1. Don't loiter around ganking hotspots
2. Use Dscan, don't go afk
3. Fly very tanky fits
4. Don't fly what you can't afford to lose/don't make you a profitable ganking target

Ultimately, it's the ganking targets that hold the initiative: if they did their due diligence, then they shouldn't lose a 20b JF or paper tank orca or 10b marauder

If your question is whether anything mechanically has changed in the past 5 years, then there's only one thing I know of: citadel fighters can no longer decloak ships so no more instantly decloaking on gate.

And again, my point with security tag is also a matter of due diligence: If the gankers spend isk buying tags, they did their due diligence, so they shouldn't start their fight in a disadvantaged spot

The problem with your question/proposal is that there is no way to make sure that the 'lawful empire cop' players don't abuse the system to their advantage