I've just about given up on 60% boards that try to squeeze cursor keys into the layout without adding a new column to the far right of the board. It is too difficult to adjust to a right shift and/or backspace any smaller than 1.75x. Consequently, when I want a 60% board, I go back to the Poker II. With the Poker II, I can type normally, and if I wish to replace the keycaps, I can do it with a single standard set. It is much easier to invoke arrow keys in the Fn layer than to deal with diminutive right shift and/or backspace keys.
I've also just about given up on 60%+ or 75% boards as well. For example, in the 60%+ category, the Leopold FC660C and FC660M are excellent and include cursor keys, but keycap replacement is difficult with the non-standard right shift and spacebar. In the 75% category, boards like the Choc Mini, Race, and Keycool 84 have layouts that use a short right shift, non-standard modifiers, and non-standard profiles for some of the navigation keys in the right-hand column. The small amount of saved space is not worth the hassles (for me at least), and rather than use these "mini" boards, I prefer to use a good 80% (TKL) board. With a TKL, I have a standard layout with a symmetrically laid out navigation island to facilitate typing and keycap replacement.
Boards like the Filco Minila and Tex Beetle have excellent build quality and interesting designs, but they present typing and keycap replacement challenges for some users. Therefore, Filco and Tex might want to consider producing 60% boards with a standard layout, top-notch build quality, and an intuitive Fn layer. Such boards might include some luxury options, such as dye-sub PBT keycaps of high quality (such as found on the IBM Model M, Topre Realforce, and HHKB Pro 2) and brushed aluminum cases, as already found in the top panel of the Tex Beetle.