I don't like the 180 rotate option that is offered by those games, but if I do a revision 2 or something like that I will include a button for 180 counter-clockwise and 180 clockwise to reflect what is out there.
Also if I return to this for a revision 2, it'll include alternate rulesets (NES rotation, ARIKA rotation, triminos, pentominos) and possibly customized rulesets (though that would be a lot of work for defining rotation rules) so that you can practice more to your style.
Thank you for your feedback, I hope you enjoy what is there.