Things I did to mine: bought compression type couplings for the lead screws - as it came out of the box my lead screws kept falling a part.
Welded 1.25 tube across the legs to make it more rigid.
I have a piece of stainless sheet destined to become a shelf/catch pan (I don’t use it enough for a water pan) .
I used a Beelink mini computer to drive it, 200 bucks from amazon, come with win 10, had a monitor etc, way cheaper than a laptop. Stay away from laptops running chrome book, the crossfire software won’t run on it.