It goes back to my point earlier. Morrison does have the ability to carry the show IF they write the show as such, but they didn’t. They knew who Morrison was when planning this show, yet they tried to make Morrison and Fett something they aren’t, talkative, personable, even kind?
Do we all really believe Morrison can’t carry this show if he was simply a version of the Mando Fett we saw? I mean if he shot that Rodian and drop kicked the little Tusken kid, or when that Twi’lek asked Fett for tribute and Fennec said “should I kill him,” Boba should have said “that won’t be necessary” and then shot him himself, or flew up with his jetpack and BBQed those assassins, we aren't having this conversation right now.
Everything about Morrison is perfect from his look to voice to demeanor if they played to those strengths. Fett isn’t charismatic or talkative, anyone cast as Fett should have been man of few words, actions does the talking, earns respect through his actions.