I don't have a 22.5", but I add handles to the center section and an aftermarket thermometer to the dome. The second charcoal grate is a must and handles on the bottom cook grate are also a bonus.
Then, you just need to learn how to master it.
My Boys: Joseph (EI); Andrew (EE); Daniel (EE)
My Toys: 11 WSMs (B, C, E, DH, DA, EZ, DZ, EO, DU, DR, EE/DU); 5 - 22.5" Bar-B-Q-Kettles; 2 - 18.5" Bar-B-Q-Kettle; 3 WGAs (EZ, DE, N); 2 SJPs ( DR, DR); 2 Smokey Joes (A, K); Genesis Silver C (DU); Brinkman Cimmaron; Chuckwagon Cooker; .
"For when democracy becomes tyranny, those of us with rifles still get to vote"