I agree. I am not a Star Wars person, but there's no doubt in my mind that the OT/Prequels are the least safe options in moderate to long term. They're being rehashed too quickly and have limited opportunities in terms of content- especially with Disney refusing to acknowledge the extended universe.
Personally, I'm avoiding the sequel sets because I don't think they will be redeemed as easily as the prequels were since Disney has cut off any opportunity for extended universe that could make their content agreeable. But Rogue One and Solo are decent, even good, movies that I think have a lot more investment potential because they seem like one and done sets that will not see remakes for a moderate while. Their interest is generally limited, but they feature all new designs and minifigs that are just adjacent enough to the OT that they will be desired by OT fans while still also appealing to the younger generation (who seem to blindly support the subversive politics that are gutting the series' old characters). On top of that, I'm willing to bet that in 2-4 years, the general "meh" attitude towards them will shift more positively as they are viewed separate from the sequels. I admit that I could be a fool down the road, but Rogue One is definitely a line that seems to offer what OT collectors want: expansive settings, interesting vehicles that feel mostly faithful, relevance to the OT that builds out its world.
Obviously, I'm small time and seriously pick and choose sets that I don't mind building myself if things don't pan out. LEGO needs to fix overproduction and Disney seems to now be aware that they have to either slow these films down so mainstream consumers don't get fatigued, or stop upsetting the classic fans who will keep up with the pace.