This actually a very exciting development. As a B2B provider of fundraising software for nonprofits, StayClassy (www.stayclassy.org), we do everything we can to put our customers' brands first. This reduces donor confusion, and ends up helping everyone involved be more successful.
Having WePay sunset their consumer-facing products has a similar effect in that it allows us to transact more money through WePay while reducing potential confusion around which services are responsible for which part of the fundraising process.
The WePay team has always been extremely responsive to questions and feature requests, so I'm excited to see what they do with the added resources and renewed focus on partner services.