Luke projecting in TLJ had a lot more importance than Yoda projecting in the prequels would. It has consequences, for example Luke can’t be killed by Kylo Ren because he’s not really there. Yoda projecting would just be an unimportant detail since it doesn’t have any tangible effect, and would probably undermine Luke’s projection in TLJ.
Don’t let me get in the way of anything, but I think projection Yoda is a bad idea.
There may be a compromise, an important point is that Yoda cannot be there, undermining force projection in general would be dead right if he was still on Geonosis basically only miles away from being there physically, in a hypothetical 3-in-1 the timing of events may be shifted putting Yoda in a position (maybe kashyyyk?) far away and restricted, unable to attend for some other plot circumstance. Yoda would have consequence as he senses Dooku besting Obi-Wan and Anakin, the foretold chosen one they’ve been watching, early drafts of Return of the Jedi had projections of Yoda facing the Emperor in some capacity so I don’t think it’s that far of a stretch, mileage may vary on whether it’s a cool parallel or a half baked rip off.