Very true. So there is reason for these features. Gateways are risky operations, and they are already counted in T1-3. When they (or other operations) shut down, our T4 operations grow while T1-3 shrink. This is basic protocol during a recession, to tighten up and pull back money into the core. As for stable reserves, they are also ongoing operations and are not usable for daily liquidity balancing, so buying them is like putting money in a safe.
Im not sure there is a cureall for boiling down the entire ecosystem.