The space issue I have observed with deployment alts is that all of them have lots of components mounted on both sides of the board leaving no additional space for BLE or WiFi without making the board either thicker via stacking a daughter board or longer/wider. Currently I have Quantums, Quarks, Protons, TRS (which is relatively huge by itself), RRC2 and RRC3. SLCF's are similar in size to RRC2's. Dave K flies Marsa and its a large altimeter though it has a LOT of functions. I think (my opinion here) that people are trying to get more functionality in smaller and smaller rockets and increasing the size of the altimeters is not always a good option a BT50 sized rocket is one heck of a squeeze to get both a battery and an altimeter into a coupler sized bay even one 4" long, and I am getting ready to do just that with a 3d printed sled and a Eggtimer Quark).
On the beeping thank goodness my hearing is only slightly impacted at this point in my life, and the alts with dual tones allow me to choose one that is easier to hear, I am a truck driver by trade so the "industrial range" is where my hearing loss is at (which is also where women and small childrens voices are....
). A "listening" tool would be nice though.