Wall Street wants a deal between T-Mobile and Sprint rich with fees and “synergies,” but nobody counting the money cares whether consumers will actually get better service or lower prices as a result of another wireless industry merger.

Recently, more players have entered the T-Mo/Sprint Drum Circle, seeming in favor of the merger of America’s third and fourth largest wireless carriers. Moody’s Investor Service wouldn’t go as far as Sprint CEO Marcelo Claure in playing up the deal’s “synergy savings” won from cutting duplicate costs (especially jobs) after the merger, but was willing to say the combination of the two companies could cut their combined costs by $3 billion or more annually. Based on earlier mergers, most savings would come from eliminating redundant cell sites, winning better volume pricing on handsets, dramatic cuts in employees and back office operations, and spectrum sharing.

“Imagine if you had a supercharged maverick now going after AT&T and Verizon to stop this duopoly,” Claure told an audience in Miami.

Wells Fargo called Sprint’s large spectrum holdings in the 2.5GHz band undervalued, and could be an important part of any transaction.

Sprint has more high-band spectrum than any other carrier in the U.S. Much maligned for its inability to penetrate well indoors and for its reduced coverage area, most carriers have not prioritized use of these frequencies. But forthcoming 5G networks, likely to offer a wireless alternative to wired home broadband, will dominate high frequency spectrum, leaving Sprint in excellent condition to participate in the 5G splash yet to come.

Wall Street banks can expect a small fortune in fees advising both companies on a merger deal and to assist in arranging its financing. Any deal will likely be worth more than the $39 billion AT&T was willing to pay for T-Mobile back in 2011. With that kind of money at stake, any merger announcement will likely be followed by millions in spending to lobby for its approval. Washington regulators ultimately rejected AT&T’s 2011 buyout, arguing it was anti-competitive. Reducing the U.S. marketplace to three national cellular networks is likely to again raise concerns that reduced competition will lead to higher prices.

A merger is also likely to be disruptive to customers, particularly because Sprint and T-Mobile run very different operations and systems. Moody’s predicted it could take up to five years for any merger to fully consummate, giving AT&T and Verizon considerable lead time to bolster their networks and offerings. Moody’s notes Sprint also has a history with bad merger deals, notably its acquisition of Nextel, which proved to be a distracting nightmare.

“If [another merger] stalls or is derailed by operational missteps, the downside is catastrophic,” Moody’s noted.