1-Yes
2-No

Let me explain I abondoned the marian control for my legion commander offices, instead I triggered them with 50 city ownership. so you do not need marian reforms for my roman offices.

but I modded my EBBS script for marians for 50 provinces so ın my PC when I get marians I get my roman offices too.

as EBBS scripting is not the scope of my mod I do not add EBBS file cos I have no backup for it and it will make my mod a nightmare to download. EBBS is around 6-7 MB my mod is just only 1.6 MB.
so you can change marians yourself. If you are happy to get my offices with 50 cities and marians with 90 cities there is no problem. otherwise there is a lot of threads that explains how to change romani reforms. very simple for me : find EBBS

Spoiler Alert, click show to read: 
;Unconditional Player Reforms
monitor_event FactionTurnEnd FactionType seleucid
and FactionIsLocal
and I_CompareCounter Romanii_Reform = 1
and I_NumberOfSettlements seleucid > 49

set_counter Romanii_Reform 2
set_counter MarianReformsAdvisor 1

terminate_monitor

end_monitor


if you change this trigger like that you make marians to be triggered with 50 cities.

I hope it helped.