Thanks a lot Michael for your reply.

@You : "...It might be feasible to turn it on in the future if MoI needs to use a database store for storing history information..."

I understand your point of view. No problem.
Anyway I hope that some day you will decide to enable Local Storage. :)

@You : "...But it's very likely that it would use SQLite and not a No-sql engine..."

Two questions :

1) If I decide to use SQLite, can I access it directly from Moi's scripts/command ?
Is this solution good for both WIndows/Mac version of Moi ?
What I want to say is : if I decide to write a plugin that should manage a SqlLite database inside some commands/script written for Moi V4,
can I "write once - run everywhere" ? Here for "everywhere" I mean both Windows and Mac version of Moi.
Or for example, if I want to access a SQLite db from within a Moi script, I must run Moi in admin mode on Windows or do other kind of "trick" on Mac ?

2) SQLite or not, I think that at least I could work on a bunch of JSON files, used for storing all the data that I want to manage.
Same thoughts like question 1. In this case "write once - run everywhere" ?

Thanks a lot for your kind support.
I stay tuned.