yeah you are right, we are learning about performance improvement as we work on this so yeah I cannot promise a super performance for the moment .... BUT, to your next point, we are about to finish a mode that allows matches to be broadcast and we have just created a twitch account to show live showdowns (https://www.twitch.tv/m4arena) .... we started experimenting with this yesterday =) .... a lot of people enjoyed more watching than building .... but one step at a time, next we will look into the performance side of things ..... as of mobile support, well, that would be a massive rework and as I have never seen someone (streamer or non streamer) play building games on a mobile, not sure it is worth to remake this for mobile.
Thanks for the honest comments, we really appreciate the sincerity =)