Do you have problems with generating advertising texts?

Not so long ago I've made a script as a small utility to my another tool. From bunch of websites I've manually collected advertising messages and social media posts used to promote specific service, then sorted those messages by similarity and made a regex text rotating tool (nested spun content, if you will) that generates thousands of variants from those adverts.
On every click you have another message, with similar intent but different call to actions, wording and hashtags. On another click generated text is automatically copied to clipboard, ready to be shared on social media or saved in text file or whatever.

So, the long story short, you can sort your adverts by niche or industry, create regex to rotate them into meaningful messages and make a service targeting whatever niche's you see in demand for fast but still carefully crafted adverts, tweets, facebook posts. If you add rotating of generic but topic-relevant images into the service, to match with a generated text message, you could have a really nice product that many marketers or ecommerce agencies would appreciate.

For my side, the hardest problems are:

• writing text in one foreign language (French is my mother tongue)
• and, even if I was writing well, advertising copywriting has some tricky expert rules about what makes it good, that I'm sure I wouldn't know

So, if you can help with that, that would be awesome.
But, on the flip side, ads are short text that could be simply written. So, I'm unsure I'd throw a lot of money in a tool for that. But, if it really helps, that could be great.