Vast majority of my crits involved the camera on the far side of a wall or terrain, the one's that did give me a clear view, I still hated. It interrupts combat flow and has the potential to be somewhat jarring for the player because their camera just went awol while they were already redirecting it to where they as the player wanted the camera to be not to mention it seems to input buffer a bit as well so the camera is in a different place after the crit, it never returns to where it was before. This is very obviously one of those annoying "flashy feel-good moments" devs put in that people try to button bash to speed up or skip after the first few times and I never understood why these things are put in. I mean I get it in a game where a kill cam shows a highly detailed kill animation, but in a cRPG, with very limited spell and ability animations, it doesn't make any sense. I don't want an up close, detailed view of a generic animation/particle effect that triggers a generic death animation on the victim. It's just wasting the time of both players and devs. Seeing the word critical, a little screen shake on impact and seeing the damage number bigger than normal is all I want.
Unless there is a serious number of animations still to be done, this just seems like a bad idea. If we're getting that huge variation of death animations added then sure it would be cool to see how my warlock's eldritch blast cut someone in 2 or blew their head up or took off a limb, but then, considering every crit represents getting a particularly devastating hit, then you run into the issue of how a one armed bugbear is dual wielding longswords, unless you add rules to govern limb loss at which point you're onto the 5E called shot debate, which has, niche appeal at best because no one can agree on fair, balanced rules to do it.
Kill cams and crit cams are a gimmick to showcase detailed animations and depictions of gorey results, showing 20 on a dice and a close up of an ability impact with no special animation is not the same and it doesn't have the same gripping feeling of similar action cams in games designed to take full advantage of that kind of visual reward. Please, please do not make such camera shots mandatory, should allow them to be disabled in menu at the very least.
TLDR: The crit cam is at best a gimmick with limited appeal and at worst an annoyance to players.