Moving on to better news however, I've been plugging away as much as I can and what I've gotten working is great. Following up from the animations code I had written up, I've written the editor interface to create animated objects as collection of individual animations and pass that through to the app, along with all the individual optimised animation files and written up the code to assemble it all in the app into a coherent content driven class.
Changing into non-technical-nerd-speak, that all means that I can import assets nicely and assign them to either the player party/characters or monsters (though still have a few lines of code to write there) and the app will create/use the correct animation files to render, along with all the required actions and so on. The screenshot shows the party using a spider animation while I was testing things out, and it move delightfully about in all the directions etc. It's taken a while to get here in terms of code, but I am now on the brink of having the ability to import and use various assets in the game in a completely streamlined and simple process - and all while no longer having to pull each individual animation frame from the server, but rather storing the main assets directly in the app.