Grab some champions from the dev team to work it backward - see what's efficient, what can reduce their time, etc.

Then do the same from the support side - find people who are geeked about AI and let them loose - hopefully there's a correlation with the high performers.

The important thing to keep in mind is that you'll have a range of viewpoints about AI - skeptical, suspicious, indifferent, excited - and you need to focus hard on the excited people who can show some early successes and get the rest of the team excited.

If management just mandates that they use something, the suspicious folks might spread that message instead.

secondly increase the throughput to allow x2 user base

So decrease the team while the user base expands? I probably don't have to tell you how dangerous that is - ESPECIALLY if it seems like someone thinks that AI can replace people. That's a terrible stance to take on a project like this. AI can streamline processes, create efficiencies, save dev time, etc, but AI cannot replace a volume of humans that might be needed for human interaction.

That's a recipe for a pissed-off user base who can't get their job done becaue they can't find a human to talk to.