Yechiel,
I would be a buyer 100%! Currently on Udemy, I found only one algo course with an intro to Quantopian, it's got almost 49K students, so I definitely see a Market. You definetely need a section on:
Order management: order types, profit taking, stop loss, position sizing, etc
Portfolio & broker management: Margin, leverage, commission cost, shortable float, how to trade live, etc..
Universe to trade: how to filter a universe of securities to trade ie: most liquid stocks, by sectors, liquid futures, most liquid options, etc..
trading Indicators: how to code Trading signals with entry and exit criteria (simple ones like the Bollinger bands mean reversal can work)
Options: how to naviguate throught an option chain, how to select strikes to trade, how to return the Greeks for a portfolio, how to select strikes based on the delta, how to roll and option before expiry, how to scan for high volatility stocks (IV)
How to avoid trading on earnings or how to trade earnings
My preference would be to make this course somewhat advanced, for example: do not explain what short selling is, what calls & puts are, what a future is, etc.. There is plenty of information about this available for beginners on the QC docs or anywhere on the internet.
If you need more suggestions, I'd be glad to help. Also, is QC able incorporate Machine learning ? I haven't researched this topic yet
Julien