HTML imports depends on:
- All target audience browsers implement the spec
- All target audience browsers properly support HTTP/2
Otherwise it would end up with worse initial load performance due to the orders of magnitude more requests. Now, the marketing around WC/PWA/HTML imports is heavily focused on “slow phones on 3G networks” — and what is the chance of a user in this scenario having an up-to-date browser that supports all these new features? I’m not very optimistic about that. So there’s a fair chance that adopting the full WC/HTML import stack today ends up bringing worse UX to the very users you are trying to help, no?