Suuuurre... OR just NOT use Jack for consistency reasons since, you know, he's got a permanent Vegas residency now
Why would that matter? Well, when Jack came back for the 25th, he was absent from Singapore where had appeared the previous year. The following year, he returned to Singapore fitted in his upgraded 25th anniversary Ringmaster attire. Yay consistency!
So if they gave Vegas a temporary "headliner", then it'd keep the illusion (no matter how lame & uncreative it is for Orlando to fall back on Jack. Again. For another anniversary).
Yes he's popular, but to rely on his presence every 5 years is really sad. It's bad enough he's in Vegas when it should've been Lady Luck's 2nd chance
Universal really needs to play with their other nightmare inducing faces of terror & torment OR create something new (preferably without auto-tune or a retcon/reworked existing character from the past). Pumpkin Lord was top-tier minus his belching.