*:I've got a build in hell that maxed inner sight.
All of my melee Amazons max Inner Sight. At high levels, it's more effective than Penetrate, and it also helps out your merc and partymates. The only really good argument against it is its low range, which makes it practically useless to bowies.
Anyway, as someone who makes a fair bit of ugly builds himself, I am very supportive when someone talks about a really off-the-wall build, even something that's generally underpowered, as long as it's a *VIABLE* and *SENSIBLE* build. For instance, if you build it right, a Holy Freeze Ranger might be very difficult and suboptimal, but it's still viable, and the basic idea behind it makes sense. A Sanctuary Ranger, on the other hand, simply isn't viable without some pretty extreme hoop-jumping. Meanwhile, a Frenzy/Whirlwind hybrid doesn't make much sense- one attack will become superior to the other, and you'll wind up using that attack 95% of the time with no logical reason to switch to the other. There really aren't any situations where Whirlwind shines and Frenzy doesn't, or where Frenzy shines and Whirlwind doesn't (as opposed to, say, Frenzy/Berserk, where Berserk fills the role of PI/IM solution).
When faced with what I deem to be a "non-viable and/or nonsensical build", I try to use a 3-step approach.
Step #1- Brutal honesty.
I start by trying to give a very realistic assessment of where this build is going to struggle... and most importantly, exactly *WHY* it will struggle at those points. Will it lack crowd control? Will it lack an immunity solution? Does it have no way to deal with IM? Does it prominently feature two attacks that are totally redundant (such as Double Swing + Frenzy) or two attacks that don't have logical situational uses (such as Whirlwind + Frenzy)? Or will it simply be so lacking in offense that simply beating Hell difficulty will be an extreme test of patience?
Step #2- Suggesting easier alternatives.
This is where I try to suggest similar builds that will hopefully maintain the general playstyle of the original build, but which won't face as many difficulties. For instance, if someone wants to build an Impaleazon, I might suggest a good Jabazon or Tankazon build instead. If someone wants to build a Double Swing/Leap Attack hybrid, I might suggest dropping the hybrid and just going Double Swing or Leap Attack.
Step #3- Optimization.
If the person is set on making their build anyway, I make suggestions to make it as good as humanly possible, and then I offer words of encouragement and emphasize that I very much hope that the person proves me wrong. This step is very big- while I believe firmly in ugly builds, I do not believe in making un-optimized builds. Once you decide what your idea of fun is, I firmly believe in creating the best character possible that conforms to that idea.