I think Bruce, that if strict POS marking is so high
up your list, then you really need to drop the
troublesome -tione suffix, which is the only reason
why Novial needs the four verb endings after all.
I do not see the connection between strict POS marking and -ione. In fact, it is true that -ione (and -ivi, which works the same way) causes a bit of irregularity, because the -e verbs DROP the -e, while all others ADD -t before adding -ione/-ivi. But this would be so whether you have strict POS marking or not.
Rather, my problems are that there are two category of noun: those like "rege" (which refer to animates), where replacing -e by -a makes it feminine and replacing by -o makes it masculine, and those like "adrese" (which refer to other than animates), where the same replacements do something quite different: -a makes it a verb, -o an abstract noun. In the first group, there is a special suffix -ir- which solely provides for a way of making them behave like the second class. I cannot see what "-ione" has to do with this problem, and in fact it helps SOLVE the problem, because the second (abstract noun making) use of -o can be eliminated if you consistently use -ione.
Indeed, if you want to take the language a little in
the Ido direction, ditching this suffix should be a
I cannot understand this statement at all. Perhaps you can elaborate.