I'm afraid I don't agree with you, same as I don't agree with you about Kongo being the worst Civ in the game.
Holy Sites are necessary for RV, that's correct. But I've never built any when I played other victory than RV. I've never built any on DV nor CV. I just think it's vaste of production to have faith, religion and some relic places compared to builder or maybe some useful wonder.
You forgot one thing. Science is only half of SV. The other half is production on a certain really expensive district and four really expensive projects. And that's where I use them. I also can use them in DV, to build troops faster. Or I can develope cities faster. Trust me, I'd much rather spend cogs on a district providing me more production compared to a district giving me faith.
CH and Harbour. I don't know how you, but I use money quite often to buy tiles, units or buildings in my new cities. These districts also give you traders. Their bonus is maybe minor, but take five of them, and you will get a nice pile of coins (and much more) from international trade routes or production + food from domestic trade routes (which is sure quite strong when I found a new city). Oh, and CH gives you Great Merchants, and GMs are one of the most desirable Great People for me.
Aerodome. I can assure you I can't remember if I even built it. Planes may be strong for defence, but I often try to play peacefully and maintain friendly relations with other Civs. And even if some Civ betrays me, I use the production + gold from CH and IZ to gain army quickly to beat my enemies
The planes would sure help me to defeat the attacker faster, but I can definitely do well without them. They're a small boost I can live without, and that's why I don't build Aerodomes.