Is the game still playable? Is the game still fun?
These are questions I ask myself whenever things like class/item/skill balance etc. comes up. D:OS is not a competitive vs game so immediately the question of 'fairness' is thrown out the window. What is more important is whether the game is still fun with the variety of options available? In my book, the answer is emphatically: yes!
Some combinations are going to be easier than others, and that just means I've got incentive to try different ones and find the ones that are most fun for me. And what's fun for me might be different from what's fun for someone else.
This game is very freeform in solutions and builds. That naturally gives some very easy ways through things if you want, but you also have the freedom not to. I'd much rather have the option to play how I like, giving me the respect to use my own discipline to avoid making things too easy, than have that freedom taken away.
The OP expressing a personal preference that (s)he won't game with a certain build is fine as long as (s)he is explaining why it's not fun for him/her, not saying it's something inherently broken with the game. I saw another thread from the same person saying something about archers, which I didn't understand because I'm have a great deal of fun playing with an archer, but we're allowed to have our preferences as long as we respect the choices of others too.
But back on topic. Should LW/GC be changed? Depends on why you want to change it. Would any suggested changes make LW/GC more fun to play? Remember, this isn't competitive, so saying it's more powerful per se isn't an answer in itself, only if they become so much less fun to play as a result of being too powerful would it be a concern. Maybe there just needs to be more scope in the difficulty adjustment to enable people who like playing these characters to create their own challenge - D:DC had a great custom campaign mode where you could adjust a lot of things to create your own challenge, maybe something similar for D:OS would go down well.
