Been thinking about that and someone may have mentioned this, up-thread, but the lack of "Prime" ships probably has something to do with IP rights. The old Romulan Warbird that was in an earlier episode was from ST:TOS, so CBS property. Other IP may be tied to Paramount and therefore either unusable in the CBS owned series, or licensing may be too costly.
I will repeat to what I read or heard about that. There was a fellow in CBS, that was helping push Prime Trek connectivy with SH and Kurtzman. Any PT IP had to be paid for, when the closure of unification with CBS and Paramount was coming about, that CBS exec person was fired before the December 7, 2019 union. Kurtzman in turn, made the move to curtail any further expenditures to any further use of Prime Trek IP materials. It was made mention also, that
Paramount let the Movie IP side license
expired last July, and it was not renewed. There is just the Tv and anime left now.
Yes, CBS was collecting a fee for PRIME TREK IP use from SH, cause they are a outside 3rd party user. And CBS in turn, made the effort very effectively to shutdown the talk of a 25% variant different look, cause they didn't want Vendors who were very leery about investing into the license for merchandising. But Vendors were already keen to the situation and sat out, CBS was not happy and threaten some actions, but that fizzled out.
Due to the massive legal contract, Amazon and Netflix had to go arbitration to settle on ending whatever contract they made with CBS and SH. STD was paid for up to Season 3
plus the 2 anime shows and Picard is unknown.
Now, with the current stock value declining of late, there is now word, that unification might not go through now, compounding this even further with COVID 19 effecting business at all levels, and the loose rules on tax breaks in Los Angeles for the tv industry
word is that CBS/SH sought a 20 million dollars incentive, without additional merch capital to add extra revenue, the investor side is starting to dry up.
The money to make the show*s*, is simply not there anymore.