Suggestions about tweaking some ridiculous costs in the game

AOE2 is a great game with great community, it is that game that started 20 years ago, but the thing is, that "20 years ago" form a psychological knot for most of the audience of this game without dismantling and it called "It was like this from 20 years ago". Now I want to introduce some laughable and ridiculously costs that have no sense in the game that it **should** be changed.

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• Siege Onager upgrade cost should be reduced to 1100F, 700G and even cheaper (was 1450F, 1000G). It is ridiculous how this upgrade is too expensive, you already spend 800F and 500G on Onager and now you need to spend more on this ridiculously expensive upgrade.
• Eagles: This unit have broken food cost from 20 years ago, it is literally a cheat a code for all the meso civs with the roles that it plays, food cost should be increased to 35F (was 20). actually 40 food is even better.
• Battle elephants now cost 100F, 75G (was 120F, 70G).
• Elite battle elephant upgrade cost reduced to 1000F, 700G (was 1,200F, 900G).
• The laughable xbow upgrade which is cheap dirt 125F, 75G should be 200F, 100G at least especially this unit can start to mass in feudal and once you hit feudal you will have good numbers of xbows unlike the knight which is not available until the castle.
• Longswords upgrade should be 150F, 100G. The original cost is fine, but why it need to be cheaper? Because the militia line need many upgrades and you need supplies to make it better to span in economic way unlike the cheap dirt broken eagles.
• Chinese don't need buffs, but their Chu Ko Nu elite upgrade is the most stupid and laughable upgrade in the game why? because there is literally no difference between the normal one and the elite one except 5 hp! imagine spending 760g, 760f to just get 5 more hp!!! 11

• Heavy cavalry archer upgrade cost 900F, 500G but it is literally too expensive ridiculous cost for what it gives, you just get 10hp, 1 melee and +1 attack, the only worthy thing is the +1 attack but both of the 10hp and 1melee are useless for a ranged mobile unit like the CA so the cost is not justified at all and should be cheaper. Spirit of the law made a video long time ago about how the upgrade are worthy comparing to costs, the laughable hevay CA upgrade was the worst upgrade according to his study comparing to costs and the worst ranged generic unit upgrade in the game according to cost. His list have many upgrades and units to see, and the siege onager upgrade too according to his study was one of the worst (if not the worst) upgrades in the game according to cost. The stupid Hussar upgrade too was in his list and was the worst upgrade according to cost.

• The stupid Franks cheap castles need a nerf too to their cost.

Anyway what I want to say that things being in the game from 20 years ago doesn't mean they are fine; actually my list of stupid costs is too long but those costs are priority IMO and need a change ASAP because they are ridiculous and the game still have many balance problems and many weird things for either units or upgrades and design mistakes from 20 years ago.