Considering there are destroyers in the coastal trees already, a cruiser isn’t to far fetch & maybe the only way we see several cruiser types across nations.
Although the devs definition of what is & isn’t coastal is daft when half the trees are filled with bluewater warships already, hell I chuckle at this but the HMS London (69) would technically be a coastal ship since it fought along the Yangtze River in 1947 in a vain effort to assist the stricken HMS Amethyst F116.
Maybe for trees like china & probably Israel, they shouldn’t be split but merged like pre 2.01 trees as they will be empty if the devs go the curret route.