So, if I'm reading it right, when using the optional Support Point system with Chaos Campaigns, the only thing Warchest Points do is buy tracks, and in some versions extra objectives and some options? And basically everything else is handled by Support Points?
In that case, why separate the two currencies, if for no other reason than to suddenly have a bunch of essential functions bottlenecked by the conversion process? I can understand the in-universe idea of converting liquid assets into usable parts, supplies, et cetera, but how much does it really contribute to the quality of a campaign, for better or worse?
I know the rules in CO talk at length about how pretty much any decent custom Chaos Campaign will have some degree of homebrew, houserules, and handwaving of the template rules given, and I plan to do plenty of that, but the mechanic intrigues me, and I'd like to go in with both eyes open first.