I've mulled it over after a heap of morning news. I think currently, it's too early to determine whether this is a win or lose for Trump. Later on it might never be a clear win or clear loss.
Chumley says this makes Trump look good as the guy who bombed a dude who was gassing children, but I think because of his actions since inauguration, everyone (except Trump supporters I guess) is highly skeptical of Trump and his ability to handle foreign engagements. They also doubt the sincerity of his goodwill, especially given that he tried to institute two bans on Muslims and also seemed quite gung ho about Assad just last week.
Presently the downsides of the strike seem to outweigh the optics more. Lack of collaboration with Congress, lack of collaboration with other countries, confused handling of the situation with Russia, and so on are just this particular action's problems. We have yet to know if there is a long-term plan. Supposing that there is one pre-developed plan the WH is acting on right now, wouldn't such a plan be easily interrupted by Trump's mood swings and need to cater to popular will?
There is a lot of uncertainty right now that some bits can be resolved over time ("What is the strategy?") while other uncertain aspects will create more problems ("Are we engaging in another war and regime change?"). Obama, Hillary, and Kerry spent so much time and effort rehabilitating the US image abroad and it's ridiculous how easily Republican presidents destroy that work with unilateral action.