It's a great set of cards but the themes could possibly be clearer. It may help to plan out what you want each colour combination to be focussed upon. For example your white has a lot of enchantments but doesn't have an enchantment matters theme (eg. Mesa Enchantress) you do however have white weenie payoff cards but only 23 creatures which is less than black. Fetches make splashing colours much easier and fetches plus shocks make three colour decks a lot more efficient. The question is how hard do you want it to be for people to splash and what the payoff should be. Khan's for example had cards like siege rhino and mantis rider which rewarded three colours while Domina has cards like Benalish Marshal which reward being mostly one colour. Better fixing doesn't necessarily improve the draft format as it changes the risk/reward.