Since SE seems to be still interested in making Fishing adjustments, just wanted to throw out some thoughts. I doubt this will be looked at, but worth a shot.

1> You've increased the stack size on consumable baits to 99. This is great. However, you didn't do anything to accommodate it. The guild stocks VERY LITTLE amounts per day. It's very easy to buy out the guild in one or two purchases, and generally you'll be left wanting more bait. Also, crafting amounts don't add up towards 99 correctly. For example, Insect Balls are made in sets of 12 still. It might be too much to ask, maybe up them to 33 Insect Balls per synth? Possibly alter the recipe?

2> Make non-consumable bait [Lures/etc] stack to 12. I can't even begin to explain the annoyance of carrying 45+ Minnows with me to go Fishing, while catching Fish that also do not stack. It's an inventory mess. This is one of the many issues that could easily be solved for inventory space without giving us more inventory SLOTS.

3> Give us more methods to obtain Dwarf Pugils and Drill Calamary. Also, make them used for more things. The annoyance people go through to obtain them, often are not worth it for what they do. But if they weren't annoying to obtain, they'd have quite a bit of use. Adding more fish that these could catch would also be nice. Remember, these are CONSUMABLE bait. The main annoyance is that you'll only catch 0 or 1 Fish with each one.

4> Allow us to trade multiple fish at once for Inside the Belly. Also somewhat tied up in the annoyance for #3, but in general, the drop rates of items from ITB are low enough that you'll usually turn in hundreds of a fish to get anything. This is a huge time sink that is just unnecessary due to the NPC animations.

That's about all I can think of for the moment.
As someone who's had their Ebisu for just over a year now, I really appreciate that SE has been giving a bit of attention to Fishing here and there, and I look forward to more.