The only real advancements with Pokemon have been in their waifus. The main Pokemon games haven't really changed since Red and Blue/Green way back in the 90's, and that's fine. If it's not broken, don't fix it. However, each new iteration has given us new waifus to lust/love, and Sword and Shield are no different. The hentai artist Kamuo delivers a great, albeit short, animation that brings sprite work to life. The short animation can be seen in a twitter post HERE. 

Brief clips can be found on Kamuo's Pixiv HERE and HERE.