I do not know the whole concept of the M series.I agree there's a lack of RF lenses, but it seems Canon is going to resolve this one.
My point the smaller number of EF-M lenses, by itself, does not lead to the conclusion there's a lack of them.
From observation the M series does NOT need a whole slew of lenses.
Yes, a range of zoom lenses from 10mm to 300mm or 350mm.
Example: 10-24mm f3.5, 20-180mm f4.5 and 100-350mm f5.6
Throw a small 100mm f3.5 macro in for fun.
If you want a prime or two then a 28mm f2.0, 40mm f1.4 and a 80mm f1.8 for thos wanting fast primes.
Any other lens desired can be obtained from the EF/EFs stable.
This gives some good, generally small lenses for daylight fun etc.