Distinction between the consonant R and rhotic vowels, so being able to spell "ever" as "evŗ"
Bringing back Þ and Đ and other old letters which represent sounds we still have.
Assigning C the sha sound and J its french sound so that Ch can be built as Tc and the hard J can be Dj, so Callow instead of Shallow, Tceck instead of Check, Jenre instead of Genre, and Djerk instead of Jerk.
Reassigning the names of letters to as much as coherently possible be grammatical function words so that single letters can be used as abbreviations for those grammar words, like Shavian did with T N Đ F and V for To, And, The, For, and Of.
Letting people otherwise spell words as they speak them given the phonetic values of the alphabet and judging people's writing ability on the meaning and content of their writing as opposed to their ability to adhere to spellings that solidified hundreds of years ago.
Supporting publishing houses at a much more local scale to facilitate that spell as spoken reform in a more accommodating way.
Supporting poets and other writers on the off chance one of them turns out to be a modern Shakespeare and we get an ass ton of new words to put to good use.