Four things, done properly, on top of the leagues you already play in.
Ask about a start/sit, a trade, a waiver claim, or a player you are simply unsure about. It answers with your roster in front of it.

On the clock with a pick you are not sure about. Ask, and it answers against the roster you have already built in this draft.

Tiers, not a flat list of three hundred names pretending they are all meaningfully different. Filter by format and see where the real drop-offs are.

The part that makes the rest work.