Just what http://shapecatcher.com/ http://shapecatcher.com/ put out in a few minutes seems to render more reliable as a compromise than the proposed composition

Just what http://shapecatcher.com/ http://shapecatcher.com/ put out in a few minutes seems to render more reliable as a compromise than the proposed composition Ƭ̵̬̊. Ŧ̊ (Latin capital letter t with stroke + combining ring above) or Ankh, ቶ (Ethiopic syllable to) or even simply the female sign with caret?* All seem way safer to render than this. With more than one Combining Diacritical Mark Ŧ̬ͦ it's seems quite impossible to tell how this will be rendered in different browsers. * why does HN filter for the female sign 0x2640 and Ankh?