I suppose there'll be more interactions and illustrations later, for monsters too, but it take time to do ^^ But yes, an alternative for the planks are a good idea, I want to build the stable, and 20 planks is a lot, and you have to make the same missions over and over to get enough money ^^
...Are your plank prices currently on 60? Because for whatever reason one time I noticed they fell down to 45 for me, and right now they're on 30. Something makes them go down in terms of interactions with Logan and I'm not sure what, but thankfully I realized they don't need to be stuck on the mindboggling 60 forever. 30 isn't as bad even with diabosite farming.
I did some changes to the price and after searching for his wife the prices also drops. Still there is going to be alternative way of getting planks, but I'm not sure when I will implement it as there is a lot of other things I have to do right now.
Eventually I want pictures for all opponents and NPCs, but it's like few pictures per month I can get from Zoroj, so filling everything will take some time.