Mass Effect is set in a distant future but the mechanics of which it works are truly amazing and can be used in the witcher lore. So here I am going to list all the things I think The CDPR can learn from Mass Effect 3 and use in The Witcher 3(?).
1. Map Travel
2. Powers/Skill Upgrades
Please click this image to get a basic Idea on how I am going to approach this: So we until rank 3 we increase the power of "Igni" but when we reach rank 4 - we can choose to either expand the "area radius" or increase the damage. and in Rank 5 he can choose to either increase incineration damage, or duration of incineration. and rank 6 can unlock a special move, like 5% chance of instant kill (similar to trailer where the solder explodes).
This can also apply to other signs, in this way geralt can focus on making one sign very powerful, and since signs are different from each other there is no need to put them all in one tree, exactly back in "The Witcher 1" in witch signs where separated.
More examples: (Again - this image can help map the idea)
+AXII: you can focus to control more opponents, or control one opponent for a loner duration.
+ARRD: you can focus to bigger impact radius, range or opponent stun/fall chance.
+YRDEN: you can focus to set more traps or traps that last longer or have damage over time.
+QUEN: you can focus to have longer duration, or bigger feedback bonus or more chain reaction?
+IGNI: you can focus to deal more damage, or longer radius, or longer incineration damage over time.
Do note that this would specialize a sign instead of knowing everything of that sign moderately you will only focus what is you want and make that point very powerful.
4. Item Upgrades
The same goes with traps and bombs, maybe you could improvise them. Being able to modify them, like for instance a rune that will increase your trap radius, or a powder that increases damage? is like improvising a certain item and creating unlimited ways to approach your combat style.
As you can see I am focusing on the gameplay style, and the funny thing is that witcher 2 already has the ability to follow all the points (except Point 2 and 5 - maybe?).
And ironically there is a lot of things Mass Effect can learn from witcher, like "Stealth" and "Exploration Value"?
But more importantly! what do YOU think?
Edits - Multiplayer removed
Many people are judging on how bad ME3 ended. But this thread is highlighting only Gameplay mechanics.
ME3 is perhaps the best game of the series - GamePlaye Wise! yes . . . the ending was terrible, I was furious after playing that long to see such Deux Ex replica ending, but the gameplay was pretty decent, and very long. 30 Hours! and filled with so much content. yes!! bioware cheated everyone out of their money by forcing you to do multiplyer, and pay for silly day one DLCs, but lets put all that aside, lets not see this on how much it costs, or how bad the story was. Lets see this gameplay wise only. Imagine if both games were free. How do you judge them now.
This is exactly like Deus Ex, horrible ending, but does that mean we should forget about the entire gameplay experience? that is what mattered in ME3, out of 30 hours, 29 hours of it was good. it only got bad after the illusive man base. But that is irrelevant to gameplay. Please comment on the gameplay only. thanks.[/indent]