Most if not of all of rsc skill guilds are out of date and are not very rewarding for mastering your chosen skill.
Fishing Guild
The fishing guild in my eyes is balanced, you've added a bank which is very nice and there are plenty of fishing spots for players.
Mining Guild
Mining guild is pretty decent, bank is close by.
Could we add some more mith & addy & rune rocks though? maybe even make a new room where you need a higher level of mining to access?
Wizard/Magic Guild
Increase the runes stock in the store
Increase the rune restock rate in the store
Add Cosmic runes to the store
Crafting Guild
I have not been in the crafting guild yet in RSCR, my suggestions are based of the reals rsc so excuse me if any of these suggestions have already been implemented in RSCR
Add a bank
Increase the mining area and add more gold/silver/clay rocks
Add a sand pit and the ability to make molten glass
Add a direct access to the cows so it makes for quicker tanning
Add flax
Thats all really I can come up with for now, please feel free to give your feedback & your suggestions