Courts of past centuries in present day

Like similar other things, I don't understand this insistence on limiting court's capabilities as if they are courts of centuries in the past. What prevents from video recording all court procedures for a review by higher courts in case they want to do that? Why the record kept is only what is generated by the court's reporter? Also why not video recording jury deliberations? What is so bad in that? They are discussing things not having an orgy? Such recoding can be,for example, reviewed if sufficient suspicion arise whether the juries put a serious effort to discuss the case or not. All these recordings can ,of course, be done while hiding the identities of those recorded. Imitating people who did not have any of these capabilities at their time doesn't make any sense.

All available means that could help in the establishment of a better justice system should be applied. Those who establish the root of the justice system of this country  were using whatever available to them and we can be more like them if we also use whatever available to us rather than just using what they were using.