I come back to this every few years just because I like interesting solutions to complex problems.

https://patents.google.com/patent/US6968819 - Advanced VTEC, infinitely variable timing and lift. No wild lobes, just freedom to vary from minimum to maximum lift throughout.

From another article:
Torquier at all speeds, the engine also sets the valves for low lift and early closure at lower load levels, which boosts fuel economy to the tune of 13% over the current 2.4L i-VTEC when the engine is equipped with the proper intake bits. In addition to being punchier and more economical, the engine is cleaner-burning as well, garnering a LEV2-ULEV emissions rating.
The slightly quirky Greek engineer, Manolis Pattakon, kinda implemented it - http://pattakon.com/pattakonRoller.htm - with amusing results: