As I’ve written about before (or as is obvious from a look at my list), I only run one planeswalker per color. The reason for that is that I, and the people I draft with, don’t like how game-dominating they can be. Planeswalkers are powerful in constructed, and can be even more so in highlander limited, where you can’t have four Maelstrom Pulse or Vindicate.
We’d rather see one, two, or none per draft, and certainly not more than two in a deck, and that’s what leads us to limit the number that can be the in cube as a whole. However, I find it kind of soul-crushing (I know, rough life) to realize that Gideon Jura doesn’t get a spot, and that likely no blue planeswalker ever will get a chance, no matter how cool. It also bothers me philosophically, because I like the power level of the cube and run other broken cards – Umezawa’s Jitte, Sol Ring – but I just don’t love the games that occur with tons of planeswalkers.
One possible solution I’ve been thinking about lately is to group all planeswalkers into a section, and then to add a number of cards from that section to the draft pool to suit your tastes. Of course, this doesn’t work for cubes that use the entire card pool in each draft (as in 360-card cubes supporting 8 drafters), but for larger cubes or smaller groups, it’s a possibility. For example, we might end up with around 20 cards in the section, and then could add 3 from that section to a Winston draft pool.
This method is really just a way of assigning certain cards a higher rarity than others, and you could use it for any card type you found overpowered or stifling- equipment, fast mana, or color-fixing lands. I haven’t tried it out yet, and I’m not sure I will. But I wanted to throw the idea out there, and ask if other people have done this, or if you use any other method of making certain cards rarer than others.