Poll: A oneshot sketch Patreon tier? (Patreon)

As you know, I have closed my commissions and am probably gonna offer sketches through patreon for a while.

It would go something like this: Joining the tier (priced at $40-60 excl. VAT) entitles you to a sketch comm similar to the drawings I recently posted, that I am gonna draw based on your description/refs.
You're only guaranteed the first one, but can get later ones again when there is capacity, thus everyone gets a chance. So you can simply drop to a lower tier after paying for it, say, 2 months, if you want a 2 character sketch.

The whole thing isn't set in stone, so let me know how you like the idea below and help me gauge how many slots I would have to plan for in the beginning. If I offered this now, what would you wanna get?