Could treaties give battlecruisers their own category?

Would later naval treaties give battlecruisers a completely separate category?

They might, with battlecruisers counted in a separate tonnage category that lets some navies operate them without receiving battleship allowances.

The altered fleet structure gives negotiators a reason to classify battlecruisers separately from battleships. Some powers could receive battleship allowances while Dominion or secondary fleets retain battlecruisers under another tonnage category. This arrangement would acknowledge the scenario's different missions for battle-line ships and trade-protection flagships. It is a possible negotiating device rather than a certain treaty outcome.