phaolo: I'm not sure about that.
Due to the Subscription list, I notice every selected channel's video, even if they post once a year randomly.
It's more important to gain subs due to quality.
However, the competition is absurd nowadays..
I am sure about it. :) Go watch just about every top youtuber speak about this - people who have millions of subscribers, not Joe Blow. They all state that having a consistent schedule for the release of videos gives a big shot in the arm for viewership. There are exceptions to this for some Youtubers who get great views posting sporadically such as iJustine for example, but exceptions do not make the rule, and when people have as many followers as those on top, the normal rules don't always apply.
For someone just starting out however, listening to what the actual pros on Youtube have to say is beneficial because they've learned the ropes and done it and are popular already. If you actually go watch the experts talk about how to become popular on Youtube, you will find that every single one of them stresses the importance of having a consistent Youtube schedule and posting it on their channel. While it isn't an absolute requirement to do so in order to do good, it is something proven to work so it is recommended.
xxxIndyxxx: Thanks for all the info and feedback!!! As far as I can tell the biggest issue is the banner, right?
Anything containing copyrighted or trademarked images, names, etc. more or less. I'd completely lose anything having to do with Indiana Jones and come up with something completely original including all original artwork etc. Copying things for free off the Internet just causes problems down the line if/when you become popular unless they are licensed under a license that permits usage, such as one of the appropriate Creative Commons licenses.
https://creativecommons.org/
You can search for "Free images creative commons" and similar for free content to use, just be sure to read the licenses and that your usage of the content is permitted by the licenses. There are tonnes of free things out there that are usable including background music, sound effects, you name it. Enjoy! :)