I'm so happy Horimiya is getting an anime adaptation!!! It is one of my favourite, if not the favourite, manga!
I know close to nothing about the anime production industry, but just from checking the people working on this on MyAnimeList I have high hopes for the adaptation. All of them have a fairly decent experience. The staff members have worked on a few anime I have enjoyed in the past, you can't get wrong with people who have worked on "Your Lie in April", especially the music guy.
Both of the lead voice actors have a huge experience and some roles I can still clearly "hear", like Kairu Rena from "ReLife" and Asuna from "Sword Art Online" for the female actress, or the male protagonist from "Nisekoi" or Yuri(Russian) from "Yuri!!! on Ice".
Not to mention most of the staff and the voice actors have worked with each other before on some occasions, which is also a plus.
Overall, I hope it will be great.