The art should be easily upgradeable due to the way I've designed the game so far so that shouldn't be an issue but thanks for the feedback. It's always appreciated.
In that case do keep the art vary simple at the beginning. The art quality wains but updates time decreases. which means more eyes on the game and the ability to actually continue without taking a month or more to do one base storyline.
Really all I mean is use a 10-20 minut representation/finished sketch first as you work on your 1 hour to days long final piece. This is because of the simple fact that when qualityincreases the amount of time and skill dos as well.
after all if what you are saying is true a simple swap should not be that hard. Plus with your fans and patrons knowing the true goods are in the works a placeholder would just be a nice apitiser for the main dish.