This is animations so which software (CTA3,iClone) we use doesn't really matter is my guess.
Yes my tendency is to create separate projects where the sequences vary.
One reason I do that in iClone is if I decide I need to make adjustments to animations I have already done somewhere in the center of the project then that can badly effect the animations in the entire project especially after where I make the changes. Having them as separate projects means I can adjust any one of them and have no effect on the rest.
Some other things I find helpful by doing this is changing the length of one of the sequences. Having them as separate projects means I don't need to readjust the positioning of the sequences after the one I lengthened/shortened. I may even decide to get rid of a sequence entirely as I progress with my project and having each sequence as separate projects makes that easy.
There are many other benefits I find doing it like that
Exactly where to separate sequences into separate projects? Well that's entirely a personal preference. I find where major camera changes occur is one good place
I don't use CTA3 much, although I have been considering a lot of getting into it soon and I am sure I would do similar.
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