inc/dec are addq/subq on the 68000; the latter accept immediate arguments from 1 to 8, and support .b, .w and .l sizes.
Even though they're split between data and address registers (a7 is special, stack pointer), you'll probably love the fact that compared to the Z80 and 6502, the 68000 isn't accumulator-based, offers more instructions (multiplication, division, lea, various others), more registers, more (and more powerful) addressing modes, etc.
The 68020 used in the A1200 has more instructions and even more powerful addressing modes, mainly the great "memory indirect" modes, perfect for some use cases.