I thought about this for weeks recently. If the proclaimed adventurer is in distress of having to need repairs on all different classes, then why not just make a universal idea to have one main craft and be able to repair all other items? Not only that, but imagine the price and cut investments without having to invest in every craft.
Realistically, I can safely say that myself and other adventurer's will come across cap level increase soon enough up to a point new equipment/recipes will be introduced, thus creating a wave of problems continuing the investment in increasing Land of hand levels. We all know this, it's going to come, and people will eventually realize and give up leveling multiple crafts.
Of course, we will get comments saying "farm" or "get help from friends". Listen well...
Not everyone is going to be in a kick ass link shell is going to generously donate crystals and materials just to level one guy to support all his crafts. More or less, a sever particularly with low population means low abundance of resources to craft or level an item. The lack of resources price hike would be the blame of player activity and population; if there is a lack of people of the server, then there's less items to be sold of the needed item. For example, pesite skin. Pesite skin is going roughly for 20-30k a piece and extremely dangerous to farm or rare to get in SP parties.
In short, make repairs an ease of pain to everyone else. It's massively large amount to invest or tedious to level every craft to support all other repair types. 20-50mil is the estimate amount of of investment needed to support every other craft (excluding fishing). The lack of population or activity of the server renders the encouragement of leveling the land of hand, or needed materials to be created, and most importantly, continuation of an adventurer/friends.
Updated. I am aware of this link
http://forum.square-enix.com/ffxiv/t...l=1#post318020
However I strongly feel it's still going to create various amounts of problems with investment multicraft, tedious time of crafting, over heated PC/laptop problems when leaving PC on afk for repairs.