I've seen Ozo in one game so I don't really know, but I don't think that he's broken. He can't 1v3 an entire team like before with aftershock nerfs and whatnot, and he has to have really good positioning along with his teammates to keep his damage up.

Don't do crystal or captain? You really should be more flexible if you wanna rank up imo(CP is the best and captains are much needed). Reim, Sam, Adagio, Ardan, and Phinn are out. Krul is a good jungler and can be really tanky. He's also good at ganking the lane with his passive and ult.. Glaive is good at peeling and has a ton of health and ok sustain due to his ult passive. He's likely more useful than Krul if you can utilize his Afterburn correctly. Try them both out when they're free or...

seems like a cool skin can't wait for it to be released!

I think that this is a good starting guide with good item explanations. However, I would like to see more detail in it. What do you do against certain heroes, when is the best time to Ult and when is it not worth it to dive to get a Captain of the Guard stack? Also the colors can get annoying when I'm trying to read sometimes, so try toning down the colors a little bit. Other than those things, It's a pretty good guide overall.

It's only 150 gold, and gives you sustain enabling you to stay in lane longer, so you don't have to Port back and giving you more gold overall. So no, it isn't a waste as long as you can make use of it. 150 gold in the long run is not really a deficit, as it ends up recovering the gold many times over.

I soloed to t10, don't see why you can't do the same :p

Thought that slows don't stack? Pretty sure that only the more powerful slow is applied.

His ult is one of the weakest ults right now, in this dive/long range poke meta. I rarely ever use his ults, if ever, when I play him and think that his ult is only good in very specific situations or in low tiers rn.

Ok, that made no sense, and Skaarf is actually really powerful with a good team. I just think you're playing him wrong probably, cause you're comparing the wrong aspects and playstyles of two different heroes and don't see why Skaarf is so weak that he would need a complete rework? Varya would be more likely to get a rework than Skaarf tbh.

Would help if you told us what heroes you have/don't have to make it easier and better. Basic suggestions: BF, Lance(good Lance's will win you the game), Grace, Alpha, Rona, and Ozo