Keep in mind I've been doing four classes a day of actual historical ling. this week and next, so I'm a little bit burned out to do imaginary historical linguistics. But I'll do my best.
I think I'll sidetrack a bit and tackle verbs. Normally, of course, the paradigm used would be the reflex of λύω- but in Catalonian Greek this verb has a front rounded vowel in the root, and that screws everything up because of vowel harmony; if the stress falls on a front rounded vowel (and these only appear stressed), no back rounded vowels can follow it; they get fronted and derounded.
Morphologically, the system has actually expanded from ancient Greek; there's now a middle/passive distinction in every tense, and an aspect distinction has developed in the future. (Given that I've attempted to kill off a good bit of nominal morphology, I'm not sure this is actually plausible- but what the heck. We'll run with it). Morphological distinctions that would otherwise be killed off by phonetic mergers have largely been restored via analogy- thus, the 2nd person middle ending
-sa (<-σαι) has returned to the present system, and the present optative has been maintained via importation of a thematic vowel
-a- from the aorist.
Here's a large table of the present system. Among other things, note that a new passive has been innovated for this system by affixing the active endings to the participle in -μενος. This includes the future passive; the original future passive belongs to the aorist future, which has split off from the normal future to become a new tense.
PRES. IND. ACT. PRES. IND. MIDD. PRES. IND. PASS.
práto prátumi prátuma pratómit pratuméno pratuménumi
prátis prátid prátesa prátist pratóminis pratuménid
práti prátusi prátida prátunda pratómini pratuménusi
PRES. SUBJ. ACT. PRES. SUBJ. MIDD. PRES. SUBJ. PASS.
práto prátomi prátoma pratòmit pratuméno pratuménomi
prátes práted prátesa prátest pratuménes pratuméned
práte prátosi práteda prátonda pratuméne pratuménosi
PRES. OPT. ACT. PRES. OPT. MIDD. PRES. OPT. PASS.
prátam prátami pratáme pratámit pratuménam pratuménami
prátas prátad prátasa prátast pratóminas pratuménast
práta prátaï prátad prátand pratómina pratuménaï
PRES. IMP. ACT. PRES. IMP. MIDD.
— — — —
práti prátid prátu prátist
pratédo pratóndo pratésto pratésto
IMPF. IND. ACT. IMPF. IND. MIDD. IMPF. IND. PASS.
épratu iprátumi ipratóme ipratómit ipratóminu ipratuménumi
épratis iprátid iprátu iprátist ipratóminis ipratuménid
éprati iprátusi iprátid iprátud ipratómini ipratuménusi
FUT. IND. ACT. FUT. IND. MIDD. FUT. IND. PASS.
prášo prášumi prášuma prašómit prašuméno prašuménumi
prášis prášid prášisa prášist prašóminis prašuménid
práši prášusi prášida prášunda prašómini prašuménusi
FUT. SUBJ. ACT. FUT. SUBJ. MIDD. FUT. SUBJ. PASS.
prášo prášomi prášoma prašòmit prašuméno prašuménomi
prášes prášed prášesa prášest prašuménes prašuméned
práše prášosi prášeda prášonda prašuméne prašuménosi
FUT. OPT. ACT. FUT. OPT. MIDD. FUT. OPT. PASS.
prášam prášami prašáme prašámit prašuménam prašuménami
prášas prášad prášasa prášast prašóminas prašuménad
práša prášaï prášad prášand prašómina prašuménaï
FUT. IMP. ACT. FUT. IMP. MIDD.
——- —— —— ——
práši prášid prášu prášist
prašédo prašóndo prašésto prašésto
EDIT: Sudden realization that the newly innovated future subjunctives and optatives are going to be indistinguishable from their aorist counterparts. I'll have a little think about that.