The real problem IMO was 030 was a weak improvement on 020 but from 286 to 486 Intel made genuine improvements.
Of course, you skipped a generation on the intel side. The odd numbered 68K parts were intended to be refinements. The 68010 cleaned up the 68000 instruction set (from a virtualization perspective at least) but didn't do much for performance. It was the even numbered parts where you got significant updates to the silicon.
That said, the 030 did make some significant improvements over the 020 when you consider the non-EC parts. The full 030 added on-die MMU and can run at 50MHz (the latter feature being more significant for Amiga machines).
