Hehe, I didn't know that, cool

However, it doesn't change the fact that not everyone likes to use them (me included

). Most people in the Amiga 680x0 coding scene have probably always written everything by hand (as far as I can guess), and I've actually never seen any Amiga related 680x0 code that has higher level directives in it.
My personal opinion is that it's actually a bad idea to include higher level directives in 680x0 assemblers. This opinion is completely subjective, of course, except for perhaps an educational reason: People should first learn how to do everything by hand without making a mess of things. When they know how to write proper code without higher level directives, they can start to use them.
Another problem may be that those directives might not always be compiled to the most optimum code, witch might be a problem when writing tight loops that have to run on actual hardware. I must admit that I don't have any facts, because I've never used those directives, and don't even know if my favorite Amiga assembler actually supports them (highly unlikely).
Anyway, seeing how it's probably reasonably easy to implement local labels, why not?