To give you some input to the actual topic as I said trillion times already any thoughts about bannings/unbannings etc. are fruitless unless you have clear criteria where those decisions should lead to. As in what are your parameters for cards to be seen as problematic or what do you want to achieve by doing xyz. Without any guidlines all the decisions/reasons seem arbitrary to people no matter how well reasoned it is. If the council has a goal/standards and the decisions lead to that, its way easier to defend those and prevent those tilting discussions every time.
The goal and standard is pretty obvious isnt it? Make the format the best it can be. Setting up clear criteria (with arbitrary reasoning and decisions to find them btw) will just shift the blame from ban choices to rule choices and will make changes even more cumbersome. In the end some people claim only they themselves know it best and just ridicule everyone posting differing opinions. That being said it makes sense to talk about similiar cards as a group (e.g. tutors, cheat into play cards) and explain by which criteria ban/unban decisions have been made because magic cards have many different criteria on which they can evaluated (e.g. cmc, Instant/sorcery, color, targets, role in meta etc.).
To make you a bit happier here are my personal opinions as stated before:
I am voting/working/arguing for a format with a wieder mix of all all basic archetypes around (aggro, midrange, control, combo). That being said due to the nature of combo decks I prefer a meta where combo archetypes are competitive but not the most common decks (losing or winning once a tournament to Artifact combo is fine, playing 4 out of 7 against it is not). To better understand my ban/unban votes it is important to understand that I follow a stricter decision-making for non-combo cards than for combo cards because I believe that the singleton rule strongly pushes goodstuff decks and makes deckbuilding quite tough for combo decks. This is why I am fine with combo only powerhouses such as Oath of druids, Tolarian Academy, Yawgmoth's Will.
I am somewhat unhappy with Aggro being a bit underrepresented (non RDW Aggro that is) I think the only way to change that would be by banning the fretchland7dual mana base. Such a change woukld have too big of an impact on the format and is out of the sciope of what normal ban list changes should force on our players.
WithFullForce:
Regarding your wishes for Skullclamp/Library/Jitte. Those 3 cards in my opinion are the worst offenders if you are looking at cards that break mirrormatches.
In Control mirrors Library on Turn 1 is simply not beatable. It is extremely disheartening and unfun for most players. Skullclamp and Jitte are two cards that make attacking and blocking basically impossible. Keep in mind that creature tokens are plentiful nowadays due to planeswalkers, CitP effects and so on. While I believe Jitte to be the smaller problem of the two, Jitte really shines vs aggro. Aggro has a tough stand in our meta (except RDW) and Jitte would make matters a lot worse.