I myself started programming with Delphi from 90s, but your arguments sound like only a perfect toolkit would be useful. I'd be perfectly happy to have 80% of Delphi 7 VCL in web-native format with a clear defined way to add custom components that fit in. Like color picker, which more often than not needs customization. And not like it was themable back then. WinXP-level theming should be enough.