People should stop asking for making everything capped, restricted and whatever, just cause it doesnt fit their ideals of playstyle. In a worst case we end up in a self restriction that wont reward exploration of skill- and crafting-trees anymore, which is a huge part of the fun. There are enough games available where you get your 5 premade skills per class or crafting job without individuality and exploration. If someone wants to be jack of all trades, he will notice from alone how hard it is. If he thinks he can manage it, leave him the freedom to do. Dont restrict it. On the other side, if you have an idea how to specialise yourself, do it. Not everything needs to be capped, restricted and idealised how some people wanna see it. Sandbox=to each the playstyle he or she enjoys. If someone needs to train all melee weapons to have fun but doesnt train it beyond 60 and specialise, why not. If someone crafts everything but isnt a master in each profession why not. A sandbox will live from diversity and freedom, not from beeing restrictive on everything.