At the very least, don't the Azores and Canaries only get on the calendar because they're willing to pay a reasonable amount for the honour/publicity of being on the calendar? While it might not fit with Ypres' model while being said to be included on the calendar, if you can get the likes of Croatia, Estonia, Latvia, Hungary, ect to pay an increased amount for their All Live coverage, maybe conditionally on being rotated in and out the WRC, maybe you can fund it across a season. We were always told Ypres weren't in the ERC because they wouldn't pay the fee asked, so everyone else included must being paying a reasonable fee to be included already.
I'd love to know what the price would be for two days of NEP/All live coverage. Rough estimate, €150k? Surely someone can tell us or provide a better guess.
You could maybe subsidise that with a small rise, or reallocation of funds, of Championship entry fees.