How can I improve the look of my flat eyebrows and heavy eyelids?

I'm 32 and have been getting Botox 4x/year since I was 28. My automatic "resting" expression is now to have my eyebrows slightly raised - because of the Botox, only the outer edges raise, opening my eyes and giving my brows an arch, which I love. Over time, I've developed wrinkles in my forehead, above my lateral (outer) brows, so am thinking Botox is not a long-term solution. I've considered a lateral brow lift, but from what I've read, it will only last a few years. What are my options?