A challenge to the governor
Bangkok has a tiny proportion of parks compared to other large cities. There are many ways (often low-cost) in which Bangkok could add park space.
Though some rhetoric has been blown in that direction, tangible action is missing. The re-elected governor now has a golden opportunity to improve things in that regard. Along with that could be the construction of fun and challenging things for children. Oh, and more and better-stocked libraries? Nah, that's too big a stretch.