Geography becomes a decision instead of a default
A firm that can serve clients anywhere has to decide where to advertise on commercial grounds rather than on drive time.
Because this is federal practice, the radius that constrains every other legal account does not apply in the same way. That is an opportunity and it removes the setting most accounts lean on.
Advertising everywhere is rarely correct. Costs, competition and the language mix differ substantially by market, and a national campaign will spend most of its money in the most expensive places.
The useful approach is usually choosing markets deliberately: where a community you serve is concentrated, where competition is thinner, or where a court or field office you know well is located.
Local presence still helps conversion even when it is not required for service. Somebody deciding between a firm in their city and one three states away will often choose the first, all else equal.
Be clear in the creative about how remote representation works if that is what you offer. A prospect who assumes they must attend an office will disqualify themselves quietly.