I expect phones with HWKBD to be far and few between but I think that TOHKB is still a good concept. Although the one with the magnets for the Jolla phone did not work out that well for me, if a company made a TOH slider mechanism you that you could attach a HWKBD or game control that would be good. Unfortunately, another bad trend is that companies are making phones so that you can't replace battery. As a result, back is not removable.