In regards to the 157, I definitely agree it should go to Cicero/24th. In regards to service on Kedzie, buses can fit down the street, but the corridor has always been sorta hamstrung by the 82 being so close. On top of that, I don't think there's been bus or trolley service on Kedzie btwn Chicago & Fullerton. Extending it to Montrose would make it longer than I think it needs to be, and the actual NB terminal would have to be either Kimball or Western most likely. The 93 used to be called North California, but idk why it was dropped when it gained the Dodge extension (I still think the 15 should be Jeffery/51st, so I agree with you there). I don't expect name changes unless the pilots become permanent tbh.
In regards to the 52 & 94, the history of these two routes fascinates me, so I'll use your comment as a springboard for a deep dive.
52: the original 52 went from California/Roscoe to Kedzie/67th as far back as 1953 when it was a streetcar. Sometime btwn 1953 and 1956, it switched to trolley buses and was truncated to 63rd, it's current southern terminus. Eventually, it would switch from trolley bus to motor bus, but I'm unsure as to the year of this switch. Starting in 1987, its southern terminus was switched to 51st/St Louis and service to Kedzie/63rd was reserved for late night service only, although this ended in 1993. Since then, the route has existed as we know it.
52A: This is also a route with few changes. Used to end at Kedzie/63rd, was extended to 43rd/Archer sometime between 1982-1985 and was truncated back to the Kedzie Orange line upon its opening.
82(A): There used to be service on Kedzie from Milwaukee to either Foster or Bryn Mawr, provided by an offshoot of the 82, However, the 82A is too complicated to understand without a timetable (a little bit like the modern day 82 with all its various service patterns), so I'll let you make of the map what you will.
89: There was also a dedicated North Kedzie route, from Logan Square station to North Park garage (officially Kedzie/Berwyn). There are only records of it from 1982-1985 and was presumably cancelled due to low ridership and competition from the 82 (it did only run peak and maybe midday). It's original function was to replace a discon't segment of the North California route (what we know as the 93).
93: As far back as 1972, this route used to run all the way to Logan Square (I've always wondered why there was a terminal there) and had two NB terminals: Peterson/Jersey or Howard/McCormick, via Foster, California & Howard. The Peterson/Jersey route was cancelled sometime in 1973, and sometime between 1980-1982, service to Logan Square was cut. The 93 would suffer service cuts in 1992 (Sunday) and 1997 (Mon-Sat late evening) but in 2003 would eventually be extended to Davis Purple line along the routing we know. There was also another North California, although no map for it is available (although it's routing was covered by the 82A, mentioned above).
94: The 94 has also been fairly consistent, at least in its early stages. The earliest iteration, as a gas bus, went from Chicago/Sacramento (using the service drives to loop) to California/71st. In 1983, it was extended (really its SB just moved a couple blocks) to Marquette Park (71st/Kedzie). In 1994, it was rerouted to serve Western Orange line. In 2005, it was moved to the Chicago/Kedzie/Grand loop it serves now. It also played garage hot potato for a(n extended) minute: It was transferred from Kedzie to Archer in 1994, then after Archer closed in 2010, it was split between Chicago & 74th, then two years later was moved fully to 74th with two years after that being the SB terminal change from 71st/Kedzie to 74th/Damen.