I find it’s just creating different controversies to the ones you’d have without it. Pain in the * if you’re doing a bit of in-play betting as well. If/ when it arrives in the spfl ... I’m certain they will put their ‘unique’ flavour into the experience. I think it should be a bit like the tennis though. Managers get 3 ‘calls’ in a game and once used (or not) that’s it. Would stop absolutely everything being questioned and add a minor mental tactical angle to games.