When King8 first made this post, he claimed that several trees were useless. After members told him he was wrong, he removed his theories, changed the majority of the post and called it "fantasy". For someone reading his post now(after all the changes he made), some comments definitely seem rude. But these comments have been taken out of context because he edited out everything he was wrong about. My first comment was based on what he wrote the first time and was meant to be helpful, anyone that can read can figure that out.
King8 wrote:Bart wrote:Fumbles wrote:Suggesting that skill trees get "trashed" is a bold statement to make if you're new(er) to the game.
The Stormzon is a recent addition and may need some tweaks but its a strong build overall. A decent scepter for leveling and making it so Thundercrack could trigger on-attack procs would be good improvements. Stormzon also has Thundercall, which is like apocalypse except it deals both lightning and physical damage(its OP). The bloodzon has been around forever and its one of the least played builds these days. It was pretty strong and probably still is. The low life=increased dmg isn't a mechanic that appeals to most people when there are so many builds that don't require that risk to improve dmg/kill speed.
I won't go through each character because there are many builds I haven't played and my opinion wouldn't mean much. What I will say is the game is very complex. Each character only has so many skills but with the the vast amount of uniques/runewords/crafts/o-skills the builds are only limited to ones imagination. Whats nice about this mod is that its constantly improving and the patches are always worth the wait. Before you spend time trying to theory-fix the skill trees, try new gear combos and skill-plans first. Again, there are tons of items, and so many of them don't get used because the deciding factor typically comes down to kill speed and whether or not the build can do most/many ubers.
Want my thoughts?
Keep playing
Try new builds
Try old builds
Read the docs & visit the old forum often(for science!)
Don't let kill-speed expectations ruin what might otherwise be a fun/successful build
Git gud
Play styles compliment gear differently so do your own testing
Don't listen to Bob who only plays flavor builds. Bob is full of shit.
Never trade Sky Spirit
Don't listen to Potato, hes still very noob 
Yeah i have it on my mouth but i was lazy to explain it detailed, +1
All fumbles did was state the unnecessary, obvious. This post is once again about theories and fantasy skills like turning into a cow and eating people, not a place where pretentious noobs can act big and bash.
How can a guy that doesn't know the basic function of the cube, call someone else a noob?