@RedCaesar - Agreed with your post except this part:
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At level 30 you could max all but one tree in ME2. The difference is, in ME3 you don't need to put points in skills you might never use just to get access to the powers you want. That, and gaining experience throughout missions, not just in the end, made powers more accessible. Especially with an imported save.
Level 1 progression has quite a nice leveling curve IMO, you have to spend quite some time before ending with your final build. I usually end up with my final build somewhere around Admiral Koris mission when using just 5 skills (including Fitness and class passive).
I was not talking about build progression.
Build progression will certainly determine what powers you end up using throughout the campaign. As such, you do have some level of build variety within a class as you level up. But eventually (around level 45 or so?) you end up with your preferred build/playstyle and then you just end up sinking points into powers you never use. You can max all but one tree at level 57.
My point about ME3 is that at level 60 you can end up with the same build with the same class in two different playthroughs, even though you played both classes differently. For example, let's say you have two Engineers with Overload, Incinerate, Cryo Blast, Sabotage, Combat Drone, and Sentry Turret (plus Tech Mastery and Fitness, you ignored your bonus power):
- First Engineer focused on Overload, incinerate, and Sabotage
- Second Engineer focused on Combat Drone, Sentry Turret, and Cryo Blast
Two completely different playstyles but by the end they look exactly the same because you had too many points to spend.
My point about powers and points, is that you should never have enough points to spend on almost all your powers. You should be able to look at two different Engineer builds at a glance and get an idea of how you played each playthrough. With ME3, I could load up two different Engineers (or Soldiers or Adepts...) and not be able to tell them apart because by the end they look exactly the same even though I used two totally different power sets during the playthrough.
Now, I typically never spend points into powers I do not use but I hope you see my point.