Using Asta 1A a lot outside of down/roll traps is the sort of thing that will make a lot of people on this site very unhappy with you. It's i34, so braindead easy to block on reaction every time, and if you use it more than a few times you will get it jumped also. The thing is, online it's blockable easily on a 5 bar, but blocking it isn't good enough. It's safe, it forces you to crouch to block it, and it spaces well. So it actually returns things practically to neutral. At least if you block Mitsu 1A you have advantage within reasonable range. So, to be honest even if your opponent is blocking it, if you are using it with any kind of frequency (i.e. more than once a round) it counts as lag abuse.
If you look at good Asta videos from offline play they very rarely use 1A. This basically tells you that it's not a great move. As for 1[A] and all its variations and follow ups, they are complete trash.
If you look at good Asta videos from offline play they very rarely use 1A. This basically tells you that it's not a great move. As for 1[A] and all its variations and follow ups, they are complete trash.