more elements where my character is in control and not me would be welcome - hacking, lock picking, persuasion for example type things.
If I understand correctly, that sort of alludes to my post that mentioned non-combat skills, so I thought I'd dig a little deeper into that.
In ME1, you needed someone in the party to have the appropriate level decryption / electronics skill before you could attempt to open something secure. I quite liked that and found it more immersive. It was also another consequence of your choice of party members in any given operation. There were 2 types of content accessible from hacking: loot, and side quest acquisition (they could also be acquired by entering the appropriate system).
ME2's Shepard was apparently an accomplished hacker and safecracker, but it still relied on the player's skill to solve the puzzles presented. By ME3, security was pretty much a joke, with the omni-tool able to hack into everything. (I found it more believable to role-play that EDI was doing the hacking through my omni-tool.)
I would welcome a return to ME1's system of needing the appropriate skills in your party, but without the annoying mini-game. The party member with the skills should be able to complete the hack without the player's assistance.
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On another note - how about learning skills / specializations from other NPCs?
DAO required specializations to be unlocked by learning the skills directly from an NPC, which I found immersive. ME1 awarded a specialization in the Luna mission. Specializations sort of went away after that (unless you consider skill evolutions a form of specialization).
Anyone else interested in specializations?