8 =N ₦ #XXX =n for consistency?
17 3: … # opposite of ⋮ (more logical would be to swap with .3 ⋯)
20 .1 ․ # obvious location, even though ‥ and … are at inconsistent .. and 3:
22 <3 ♥ # easy alias to trigraph cH-
23 :) ☺ # easy alias to 0u
28 # obvious line drawing gaps
32 dd ╷ # goddamn! stupid arabic dad got there first
41 2- ╌ # exactly like to 3 and 4
45 BF ╳ # FD and BD combined; FB already in use
49 HW Ƕ # HV conflicts with vh line drawing
53 # old/middle english (uncommon)
54 #WY Ƿ # replaced by UU, later W
57 #Gy ȝ # do not use yy to keep y column clear
59 eS Ʃ # ES already in use
60 es ʃ # can't use sh; s1 would be another option
64 !C ǀ # corresponding zulu letter
65 !Q ǃ # idem; !. would be much more intuitive (previously ʗ)
66 !X ǁ # idem; or !/ (previously ʖ)
67 !A ǂ # Alveolar; !- looks alike, != even more so but already occupied
70 # expected but missing
73 #A0 Ǻ # normal A-ring already provided by AA
84 #ac ℀ # prefer common A-smallCap
86 cu ℆ # co ís present though
90 a" ǟ # a1 # long umlauted, very similar to double acute
92 jo ё # io # consistent with ja/ju
108 l- ƚ # not really a macron, but wouldn't really make sense anyway otherwise
120 # middle tilde #XXX: not tilde above
125 ##n? ᵰ # already a tilde above
133 # not used all that much, better leave x) free
140 #I) Ȋ # )I exists, but should not confuse
150 # usage is similar to inverted breve, just as rare
173 #D2 Ɗ # in use by control char
180 f2 ƒ # looks like a cedilla
191 #P2 Ƥ # in use by control char
206 Y; Ƴ # not a hook below, but Y2 hook above is already present
208 Z2 Ȥ # looks like a cedilla
212 # curls (9 is mostly free because horns are so rare)
215 j9 ʝ # crossed-tail actually
225 #2/ ƻ # rarely used, and double dash is far more logical
233 # turned/inverted (trailing I is uncommon for lowercase, and already used thusly for !I, ?I and NI)
236 #EI Ǝ # would be confusing, as it's not uppercase schwa eI
237 eI ə # schwa, not turned E (latter is very uncommon)
246 #nI ᴎ # reversed capital N, but NI already in use
248 #RI ᴚ # conflicts with RI control char
256 oE ɶ # Oe also available, but E looks capital
258 Ap ɒ #XXX Ao? (AO in use)
271 Op ɤ #XXX oy would look alike
275 #lp ɬ #XXX: lb for 'belt'
285 mL ɰ # like rL (XXX mp?)
287 # small caps (also possible at *s)
296 # more from phonetics extensions
312 # ipa releases (ⁿ already present as nS)
318 # note: common meaning
320 " Double acute accent
343 % Greek/Cyrillic special
344 + smalls: Arabic, capitals: Hebrew
345 3 some Latin/Greek/Cyrillic letters
350 # hangeul consonants at *J
372 # hangeul vowels at *J
391 # hangeul iotized vowels at *K
399 # under development or temporary
402 $PR ► # current PR should be TR
403 $PL ◄ # current PL should be TL
404 $'> ˆ # where to put ^?
405 $'? ˜ # where to put ~?
407 $?" ΅ # tonos+dialytika
424 $,i ͺ # spacing iota subscript
434 # rfc (incorrectly?) maps double to heavy