Unfortunatly, what I'd like to see happen, and what is likely are not the same thing.
Would like to see a variety of manufacturers and car configurations, but based on production specs, with suitable freedoms based on practicality/cost - somewhere between GTP and Nations Cup.
If this wasn't acceptable, then go the other extreme and use the sports sedan regs and make some serious racing cars (800kg and 800hp sounds nice) with sillouette bodies.
What's likely - a continuation of the tired old formula because those involved have too much invested in the status quo to want to change and there's not yet a good enough of an alternative for enough of us poor mugs to switch to watching something else such that the commercial powers take notice and make changes.
now I'm depressed.