ORIGINAL: Hossfly
Mr. Lou:
You asked for opinions. I have one however as one that gave up CL in the very early '70s for RC, but is now becoming more and more interested in returning to such, my opinion may not be worth much. My opinion is of short description:
GREAT, FANTASTIC, and all associated words of same meaning. 
While you are most likely very familiar with this:
http://stunthanger.com/smf/index.php?topic=12144.0 I will show it here just so other interested CLers may wish to investigate the topic. This is a position that somewhat parallels your idea, yet different in scope.
Of course, there is a strong wave of PAMPA that have no desire to see any changes to anything that PAMPA has going. Not to mean to be negative, but the individuals that now make kits for classic events will most likely not support your position, however rank and file modelers probably will.
While I have an Old Timer about ready to get tested with a Super Cyke, ignition, I also have some classic kits. I do not have much in photos of my models from the 50s thru 1970s, however the kit models I built in those days were too far modified to qualify for Classic.
One gripe I do have about current Classic and even Old Time Stunt is that there is much definition for the model, yet modern CL Stunt Engines are allowed. If it's OT or Classic, IMO the engines should be NO 4-Strokes, NO tuned pipes, and all props should at least be WOOD.
So there is my opinion about your plan and other opinions that you never asked for. BEST of LUCK for your plan and please keep the information coming.
Thank YOU!
Hey Hoss,
I agree with the rolling date, always did. I have belonged to PAMPA since 1982, also. When Nostalgia class was started, the rolling date was a feature. Later, it became Classic Stunt and the fixed date was made. I didn't like it but there were a lot of models I liked including my fathers designs.
You have a lot of preconceived notions about what Classic Stunt is, especially for a CD. There are rules for Classic, they are on the PAMPA website and can be downloaded. PAMPA is a good SIG and the people that make it up are those responsible for it's success. Many are the guys you probably align yourself with (you come off as anti-PAMPA) and others aren't, but live and let live.
Point being is that on Stunthangar you say your designs are modified Thunderbirds and Noblers of the Classic era and are illegal. You also assert that there is some kind of documentation requirement. Both of these assertions are incorrect. Your modified Thunderbirds and Noblers are as legitimate and legal in Classic as any other model. There is no requirement for documentation other than a picture, a letter, or just your word at VSC. I can't imagine any other CD at any other contest wanting to exclude you for not having documentation of a modded Classic anyway. the idea is inclusion. Old Time is the event you can't mod the model, not Classic.
In the Stunthangar Scale thread that you posted on and then deleted you made it clear you had issues, that you apparently still carry, about the white pants, halo effect in Stunt. Yeah, I'm the other 20,000 hour guy. Your point is well taken. It probably still happens to some extent but don't let anti-PAMPA individuals be your only beacon. It's a fair event as much as IAC Aerobatics are, or Scale Masters events for that matter. It's a subjectively judged event.
Your assertion indicating that there aren't many for Super Seventies kits available is again incorrect. Many 70's designs are still competitive and in production right now. Look around for what's available. Build your old Thunderbird and Nobler mod ships from Classic, and your Mig for Super Seventies, go to some contests and see how you like the goings on. Your models are legal, your Mig soon will be in the Super Seventies Class, and you have your touchstone and let 'er fly from there. Go for the old engines, the reason the event has no rules on engines if for inclusion of those that have no proclivity towards the old engine hobby, but hey, I've had a Fox, a Tigre 35 and 46, so I guess I'm with you (I'm gonna cheat and use a plasma piston/liner in my ST 46 for my USA-1, though).You've got nothing to lose but your preconceived notions and negativity!
I'm new to R/C, building Scale (Fun and Sport) and Pattern (SPA and BPA, I dig the old designs) so we enjoy a lot of the same stuff, I'm sure. Go in with your eyes open and look for the good.
Heres a pic of me and Dad (new Captain on the 880 at the time) at the '67 Nats with his totally legal modified Smoothie, and my present Tiporare.
Chris...
P.S. Note that Grish 3-bladed nylon prop on Dad's Smoothie, not wood!