Currently, customisation of PowerApps/Dynamics portal heavily relies on JavaScript. PCF is coming to canvas app too.
Please bring PCF to PowerApps portal, making it one component framework to rule all model-driven app, cavas app, and PowerApps portal, in the future.
Please see release wave 2 plan below -
https://docs.microsoft.com/en-us/power-platform-release-plan/2020wave2/power-apps/power-apps-compone...