Just a few, mostly unrelated things, that might be nice if they were changed.
Please make logs, skins, ingots, etc stackable. This is for a few reasons, first of which is it seems silly to need six inventory to do basic material synths. Remember being a newbie and having one fifth of your inventory occupied because you wanted to make a copper ingot? Second of all it would encourage players to actually hold on to those items and list them on the auction house, rather than tossing them as inventory cloggers.
Please make basic material synths able to be hq'd across all crafts. Why can my woodworker make triple the amount of lumber from a log when a leathercrafter can't acquire multiple leathers from a hide. Basically it already makes little sense when certain crafts can wind up with more products than they had materials for, so why is this withheld from some crafts?
Please let us look at our various inventories while crafting. I understand not being able to move things while crafting, but sometimes I would just like to be able to check on how many mats I have. If anything it would at least let me break up the monotony of crafting in bulk by letting me pretend I can multitask.
Choco digging is just sad right now. There have been no changes to the pools or areas we can choco dig in since ToA. The treasure pools are tiny and take forever to refill. It is worse than the original fishing system on those factors.
Please let us create synthed element clusters. By that I mean, for example, combining multiple single fire crystals to form one fire cluster. Purely because clusters can now stack, yet the bulk of our crystals come from the form of single crystal drops.
Remove the odd zone restrictions from portafurnaces. The field only caveat makes no sense and limits the already small usability of the item.
And this is a long shot, but I would like if the actual process of crafting could be sped up a little. I enjoy being able to craft, I like making items, but watching the same several second cutscene, waiting for the mini lock to wear off when the synth is finished, refinding the exact materials I just used, and waiting on the timer before I can synth again - none of this is interesting gameplay. It is rather tedious and requires constant attention.
I'm sure others will chime in if they agree or disagree with me, but it would be nice if some of these things could be considered