Its difficult to do one list considering 60-card formats and Commander, as a cheap removal spell is premium in some of those and relatively unimportant in the other
Psychic shall cause Fighting and Poison to always kneel
As of late, WotC has positioned Pioneer as one of the main formats for those who enjoy playing the killer decks, with Pioneer being the focus of several Regional Championships this year (with Modern, also a non-rotating format, enjoying the spotlight during the second half)
Overstuffing binder pages puts pressure on the corners of your cards
Its part of what makes the Commander series a good value, especially for players who are new to the format
Like I said earlier, I used to collect certain Pokemon, and they might be found in some sets and not others