I'd say we've made a lot of mistakes!
We no longer want to be masters over your faith, if your conscience allows you to take blood, celebrate birthdays etc etc the it's between you and Jehovah, there'll be no sanctions. Reconsider the stance on blood and prove that Jesus emphasized the value of life above all else.
id change the disfellowshipping, reinstatement arrangement, no more shunning. Presumably if people want to come to the hall they want to try to do things right, that's enough. Restrictions could be no preaching and teaching but not being ignored by people.
Id take away the hierarchy, labels and counting hours. For statistics you can count conversions not hours (3000 souls were added, scriptural example)
I'd emphasis love and acceptance, mercy etc. say "we're trying to follow gods word and Jesus example the best we can and we hope we have his approval" , but not "we're right and everyone else is completely wrong". Stop calling other people worldly and say we hope Jehovah is merciful to as many as possible in the time of the end. As for preaching it would be more about basic Christianity.
I'd gradually reexamine every teaching without the prejudice of past teachings and tradition of men, or the desire to control others .
Oh, and I'd organise loads of social events especially for the young ones.
vote for me!