That's true, but easily remedied by giving them a +2 bonus, or a +4 bonus, etc etc. 5E statblocks have always required tinkering (I wish they didn't, but still).
I like the card initiative; reminiscent of Savage Worlds, which I think does initiative very well.
My personal favorite, though, is what MOTHERSHIP does. In D&D mechanics, it'd be:
- set an initiative DC (for example, DC 15)
- Players roll their Initiative modifier against the DC
- Succeed, and you go before the bad guys
- Fail, and you go after the bad guys
- Reroll every round.
Quick, easy, dramatic. I really dislike losing momentum by having to write down everybody's initiative, so just doing a real quick, "raise your hand if you succeeded - you're up first!" is lightning fast.