It is perhaps a learning curve that many film makers have learned from since, that multiple sequels should always be made back to back: That way subsequent movies can insure that actors and film crews are all involved and contracted to finish the project. A practice utilised by the first two Superman movies and the Back to the Future sequels. Sadly this was not the case for the proposed Daleks Vs Mechanoids movie. Which probably wouldn't have featured either metallic monsters anyway...
After all, they were immediately popular with the kids and heralded as the new Daleks. Perhaps the story is only really worth watching for this short lived and yet glorious moment of Daleks and Mechanoids in battle. However, the battle is far too brief and the Mechanoids much ill used. So lets look at what might have happened.
So what would that third instalment have looked like? Speculations, still abound to this day but most likely David Whitaker would have taken on the reigns again as the movies script writer and Gordon Flemyng would have directed, coupled with the nine fingered talents of Bill McGuffies crazy piano ensembles and jazzy music score.
Keeping in line with a starring male lead (or comedy actor), it might well have included new companions (such as Edward Judd) or introduced other contemporaries such as Jim Dale, either might have been good as Ian Chesterton and Steven Taylor. Although I suspect Edward Judd would have been more suited to the male lead, (originally filled by Roy Castle and Bernard Cribbins). In this respect, it would have also been entirely possible for Jill Curzon to reprise her role as Louis (as a love interest) to Edward Judds character. Jim Dale may have been shunted to the back of the story as marooned astronaut Steven Taylor, prisoner of the Mechanoids.
MECHONS, MEKONS AND MECHANOIDS
MORE MECHANOID ACTION
The Mechanoids themselves might most likely have had a more prominent pivotal role in this movie too, as the majority of the Tv version featured them only in the final episode. As a result, the movie version may well have reduced or cut out other aspects of the Tv version to give more Mechanoid screen time, such as binning the robot Dr Who altogether, whilst shortening the plot around Dracula's Castle and the Mary Celeste and cutting down the embarrassing dialogue with the fishy Aridians and just moving the chase along at a much quicker pace.
Screen time is a commodity like anything else.Whitaker would have taken the incentive on this and reviewed the original script, cutting back the padding that made up the laborious six Tv episodes and cut it right down to a tight 82 minute narrative.
The three Mechanoid props are rescued from the scrap heap and given a new paint job. Their round bases are raised to six inches, in order to look more cinematic on the big screen. Several extra Mechanoid crowd fillers are built by Shawcraft. Who also recycle the Mechanoid City on stilts.
MORE SCREEN TIME
In the Tv version, only the last episode is dedicated to the very brief appearance of the Mechanoids but in this film, they might be introduced a hell of lot sooner, maybe as soon as the half way point of the movie. Which would have meant a good forty minutes of Mechanoid action, where the execution squad might even summon up the entire Dalek Empire to do battle with the Mechanoids on their own turf. Hence a more satisfying ending than the Tv version.
For the grand final, a spectacular air battle might occur above the Mechanoid city, between the Dalek saucer and a Mechanoid battle cruiser. All this is of course, on a par with the model work used in Thunderbirds and reminiscent of the Saucer hovering over the mine workings in the second movie.
While in the jungle below, Mechanoids fight Daleks one on one before they eventually overrun the Mechanoid city for a final confrontation, similar to the Thals battle at the climax of the first movie.
But these are all just theory’s. In any event, a movie version of The Chase, with a larger portion dedicated to the Mechanoids would have most likely secured the franchise for at least a few more sequels. Who knows.