If we are being somewhat pushed to the idea of needing to have a trailer filling up what will otherwise be a rather blank space (Unless we use the old page), can we at least have the trailer as we want it?
You are currently suggesting (forcing) the usage of a trailer but wanting it to conform to your notions of what makes good advertisement (60 seconds), and I do not agree with this. For a medium that's about a long term entertainment (potentially several hours worth a day) , I want to at least be able to show case 2 minutes of what people are coming in for, if not more.
You allow plenty of space for highlight clips which are in no doubt cluttering your servers. Kindly grand me a bigger chunk so that I can put together the demo the way I want.
This is simply not a great idea. Consider that "trailer" is just a fancy word for an advertisement, because that's exactly what it is. Would you really expect someone to sit through "at least" (your words) a 2 minute advertisement? Even 60 seconds is pushing it, to be honest. Maybe think of the new channel trailer being limited in time as an opportunity to grow as a content creator; it could be a great exercise in your ability to sell your content in a more concise and effective manner.