The solution is to remove partyfinder option an donly be able to queu in via dutyfinder so you would encounter randoms only and the other solution would be to, removal of 50 to 70% of all skills for all jobs, it is ridiculous to have like 20 or more buttons you need to press, but increase the actually skill based way if defeating the bosses and add AI to bosses the way, so every clear would be a completely different experience.
To improvise during battle would be nice and to such a degree needed that you can't just wing it.