Imo, there’s already too many beach maps altogether, with MP_Beach as the straight rtcw copy, Dday_nw as the rtcw-beach-with-some-addons, Atlantic Wall as a beach clone, and 1944_beach as yet another beach map. Not to mention Carnage Canyon which isn’t just the beach but at least an “attack the base from the beach” map, and not to forget “camp the allies on the beach map” 
Normandy claims to have taken ideas from Beach, but it was so long ago I looked at it I don’t remember it.
Ammodepot is not only about a beach but the landing spawn is on the beach, and oh there’s Fun Beach 1&2 as well, more complex than “standard” beach but still beachmaps.
I don’t think I’ll miss out much by not playing a copy from RtCW without any “extras” 