Sander Wojcik and Liam Haliburton will probably at least enjoy experimenting with Counter Catcher.
Armorouge would be at least neat if it had any decent acceleration. Effective 340 HP on a 2-prize stage 1 is no joke, and there would be matchups where it would always live a hit. Just that right now, it can't hit back.
Toedscruel would require a very specific metagame to work well, as the decks it can primarily deal with right now are Gholdengo ex, Bax/Pao, and if it ever showed its face again it is useful against Sablezard in blocking Klara. That's nowhere near enough right now with how many decks are sitting in good standing, even if Gholdengo proved it could hold its own and Sablezard returned with a vengeance.
One thing that no one here has brought up about Maushold ex yet is that you can technically can get more than 120 damage from its ability through Zoroark putting Maushold ex into play. With Maushold's attack only doing 100-120, you really kinda need to have the chance of putting up 6 mice else you just fall behind in damage against anything bigger than 220 HP. It's way too low of damage if you only go for a maximum 4 mice, and rather annoying to maintain if you start going for more than 4. It seems way more straightforward just to go for Family Attack's 210-280 damage.
Would Altaria ex be good for Regidrago Vstar?
At the end of the day Regidrago is clunky Regidrago, but this is useful for Regidrago against Lost Tina specifically. Even if Drago is consistently setting up, Lost Tina is normally a bad matchup for it, and the only other ways to push that matchup in Drago's favor is to Boss Snipe a solo Tina V. Garchomp V is doable too, but that card is super impractical with being a basic and having a discard-3 on it. Altaria feels a lot safer a pick.