Lets be honest to yourself. It took you 30 minutes to make because quite frankly you didnt have a single piece of grass or hempen yarn on you (what decently ranked weaver does?).
I had to go through the same because of that very reason, not because the subitems took long to ''make''.
Rather because the lowest grade of cloth i had stored was canvas~
Only reason why there arent many low ranked items on the wards is because due to retainer bazaar limits.
They simply wont sell for ''enough'' compared to other items, most of the time, and as such are not worth making.
Also, in my experience its not really strange being unable to make something when your low level at your craft. :P
People seem to forget that apart from being able to craft higher level items when your rank is higher, you also gain a much greater availability of materials~
More on topic: (and a general response, not person specific~)
Optimal rank is awesome for anyone with multiple classes and/or a crafter.
You want a sense of achievement getting that to ''that rank'' so that you can use your awesome equipment?
Guess what, most people already feel that sense of achievement just by obtaining said equipment.
Why wait to be able to equipment just to have another, but more fake sense of achievement?
I've done many dungeons/instances/tough stuff in the past in mmos, and gained a higher level item as a reward.
Frankly all it did was annoy me that i couldnt use it, rather then feeling any sense of achievement when i finally could.
Clearing that dungeon, killing that boss, doing that tough party/solo quest/encounter is what gives you a great sense of achievement, the equipment being its memento.
To give an example, in WoW, when tbc was new i was leveling up my druid first.
At level 68 i managed to tank the botany (sp?), before they took out crushes and all.
It was pretty rough altho fun, and gave me a great sense of achievement.
I believe it was the demon that dropped a staff that my druid could use for tanking, which would have been a nice memento for being able to manage that run at 68.
Except ofc i couldnt use it because it had a level requirement of 70~
When i gained 70 i must say i didnt feel much of anything being able to equip it then, after all the dungeon run that gave me said item was a bit in the past and the novelty of it wasnt quite the same~
The solo purpose of rank requirements is to prevent lower level characters from using items vastly more powerful from anything they could use at their current rank.
Given that currently items are already nerfed under optimal rank (albeit with them being % based its really no big deal for access/crafting equipment) that solo purpose doesnt exist here.