I am using multiple copies of GSA SER. The biggest challenge is now to get a decent amount of links. Purchasing a few link lists at a time helps, plus maintaining a private custom link list from those purchased link lists helps a lot. Yes, GSA SER is a time saver and I wish they come with an MCP. But thanks to Agentic, now you can automate a lot of things. I am developing my own MCP for GSA SER to use privately and heard that the developer is also going to release one soon, which is great. It's going to level up creating campaigns to the next level and will be the biggest advantage for newbies who recently purchased the tool.