I was frankly a little disappointed with the simplified start procedure, but fully understand the design choice. Other than that and a bit of a lack luster external sound (I think half the reason I buy these older planes is for a good fly-by every once in a while), I'm quite happy with the DC-6.
In my opinion I think a lot of X-Planers were expecting an NGX/777 level aircraft, when in reality this is more akin to the Jetstream (i.e. a technology demonstration product, maybe with a lot more simulated than the Jetstream ^_^).
I have zero knowledge on a DC-6 start cycle, but as I've read it in the manuals could be fixed by:
One more line for the settings panel; "Simplified Start Procedure (true/false)". Simplified uses current start method Not-Simplified (with some FS-ism)
Safety, Start, Prime, Boost are separate toggle switches (safety and start could still be tied together.
Switches are assignable in X-Plane to hardware or keys If safety is in a "released" state all other switches will release instead of holding state
Provide some fudge factor, if the starter isn't dis-engaged immediately after catching your starter doesn't blow up immediately, etc.
To aid in the starting (as you said it typically requires 4-6 hands) either:
Provide a simplified 2d-panel with switches, mag selectors, fuel mixture, and maybe oil pressure. This would allow us to visually watch the prop while operating the start procedure.
Have the "FE" provide a prop count and add some fudging to the timing to allow for view changes between that start panel and mixture levers.It's probably not possible to actually count the prop in X-Plane, don't know, but it's more important to have him call out a stalled prop so a simple scripted count with some parameter to call out a hydro-locked prop. This would also need a maintenance entry to clear the cylinder if you simulate that.
Having read through this post and being a software designer, I just now realize that is a ton of work... maybe one day