Mm... Likes + Dislikes, huh? If I'm honest, my preferences might be completely different in a month but w/e.
- I'm really feeling Xyz lately. I also like Links, Fusions, and Rituals pretty evenly. Synchros are pretty "meh" for me. I've never really liked the Pendulum mechanic (never felt it was fully utilized and most of the irl archetypes felt too boring or suppressing for me to enjoy).
- I really like the "elemental" types (Rock, Pyro, Aqua, Thunder) with Rock being my favorite. I also tend to have a soft spot for the underused types (Reptile, Insect, Wyrm, Beast, etc.).
- My favorite Attributes are WATER, followed by WIND.
- ...however, I REALLY like unusual type-Attribute combinations. If you can, prioritize unique type-Attribute combos over my preferred types/Attributes (i.e. If you come up with a good design for FIRE Spellcasters or EARTH Winged Beasts or something). Basically, any type-Attribute combination that has less than 30 representatives irl would fit.
- I don't have much preference for Levels, but I'd appreciate seeing some representation of the lesser-used ones (1, 2, 5, 7, 9, 10-12).
- Stat-wise, I always find it a bit amusing to see monsters with stats less than what their level might indicate (especially when used in an aggro strategy). But really, this doesn't matter as much.
- Sub-types are awesome. If you could build on a sub-type in a different way than it is normally, that'd be great (i.e. A deck that is all tuners that exclusively use the tuner status to move their plays forward rather than Synching).
- I generally prefer Continuous Spells over all Spell/Trap types, but recently I've been a bit hooked to Trap Monsters (the original kind) and equippable Traps.
- If you can, try not to make a Field Spell.
Flavor, Deck Types + Mechanics
- Flavor + lore is pretty interesting, but I prefer function over flavor.
- I prefer combo-based strategies, but I don't really care what type of strategy is used just as long as...
- ...It uses a unique mechanic. This is the most important thing to tie everything back to. If you use the most boring type-Attribute combo and the deck itself can't really function super well, I'll be perfectly content as long as it is using a weird/underused mechanic.
You can ignore everything else in favor of this: Deck that heavily uses Counter Traps in a purely aggro strategy.
...ultimately, while I listed lots of specifics, I'm not one to demand. I'll be happy with generally anything as long as it isn't too boring or straightforward.