About which hero to create a guide

Hamster said there was still a need for guides it just depended on the hero.
So let's assume I wanted to create a guide and let's assume I needed to play 50 games of this hero first to write a guide of him and let's also assume that I would only do a guide about a support (maybe also offlane).
Which hero would you then suggest me if I was to create a guide?

Batrider
how to play the hero in solo queue uncoordinated dota...where he actially IS good, no matter what preconceptions you might have


Elder Titan
What item to buy and when.


Legion Commander
What item to buy and when. When to go blink/shadowblade. How to break Linkens.


Nature's Prophet
How to use the hero's versatility and adapt your item build/playstyle to the situation. When you should 5-man push and such.


Puck (offlane)
Yes, offlane Puck is actually pretty good, but only if you know how to play it. A good Puck can run circles around trilanes and be a huge pain to deal with.


Shadow Demon
Balling support with insane damage output and late game scaling. Only thing is, he's not always a good pick. Still, extremely underrated hero.


Venomancer
The item builds on Veno guides on the site make me literally cringe. Drum, euls, orchid, AGI items? Blegh. Blink/veil/aghs every single game, with usual support items, and blademail now with 6.87.


Warlock
Actually an ultra underrated hero if you're not stuck up on midas/aghs/refresher core Warlock builds that aren't going to carry jack in solo queue. The truth is, that hero doesn't need items and is best played in dual lanes (both safe lane and offlane).

Venomancer is already covered by Safecyn.
Batrider means relying on teammates.


Legion Commander offlane...hmm yeah. Can work. Break linken's? That's easy just use duel.
In all seriousness though. I can try to do it but I don't expect too much.
Puck is an extremely strong offlaner -maybe.
Shadow Demon is potentially interesting but the situations in which he is really good are pretty rare.
so maybe those 3.

hehe pls don't do puck - I'm writing an offlane guide to him (it?) right now :)

write a guide about someone who you enjoy playing and who you can play to a decent level

^Wyvern?=>Already a decent guide out there.
^Cm?=>Already a decent guide out there.
^Lion?=> Already my decent guide out there.
=>I am screwed.

The only hero left would be Witch Doctor but the items to get on him are so clear on him.
Like it's 100% clear when to get Ghost Scepter or Glimmer Cape or jsut to rush Aghanim's Scepter it is logical to skill Maledict first if you want to kill somebody in lane because it does more than 1 more sec of stun. Everybody knows that Clarity on him is better for healing than Tango.
See?
I am screwed.