Wow, Peebee and Liam's loyalty missions are tough on insanity

Nothing pleases me more.

We asked them to make it harder and they obliged.

The real question is did they go far enough and should they make it harder?

Hmmm, none of those really stood out as overly difficult (though I found both fun). Might be a difference in builds or play styles. Ironically, for a shooter game I've always found the guns less useful in Mass Effect games to powers and combos. I primarily use guns to immobilize or prime enemies...and typically select power combinations that can prime and detonate. For example, I'm running with cryo beam, overload, and lance...which in that order can triple combo unshielded foes. For shielded, overload followed by lance can quickly take shields down. Weapons, I carry a Reager shotgun and use disrupter ammo for close range and eating through shielded opponents, a Black Widow for long range priming with incendiary ammo, and for assault rifle anything with a high rate or fire and large ammo capacity coupled with cryo ammo. Cover is especially important when dealing with multiple Observers since they'll melt you in seconds...though that becomes tricky to do if there are Nullifiers on the battlefield. I also use the Explorer profile, and the Blink evade bonus skill has saved me dozens of time from certain death...although it has also caused my death a few times as well when I teleported through a barricade into that Remnant electrical goo or some other hazard.

Maybe there should be on other difficulty levels for the people that will rise up to level 110 and more with new game plus.

I hear ya'. I had that same feeling about Jaal's loyalty mission. Without cloak the last part is challenging.