mIRC should have local connection varriables, instaid of adding $cid and $network to the vars each time using them

that could be really useful
what do you think??

I thought about something like /set -l ...
or /lset ...
it could be accessed as a normal varriable or with a new syntax, lets say $l(%var_name) \ %$var_name \ %lvarname (L as in LOCAL) or even a new thing, such as *var \ ^var ....

*var \ ^var... No... It would break a lot of scripts.
You are proposing a major change for something that has more simple resolutions. Khaled would also have many problems with which he would have to deal. For instance, where would this variables be stored? there would be a new section in the mIRC editor?
You can simply create an alias l that would read $cid, create a hash table for each connection id and then look for items with the parameter you specified. And the equivalent for a command...

thought of that, but then accessing them won't be comfortable

Won't be comfortable?
You would just have to type /l myvar value and $l(myvar). Which is basically the equivalent to /set and $var.

think about someone who has lots of lines already coded that won't work right when using multi servers, if there was something as I was saying it would have been much simpler to upgrade a script

then he should update the scripts to multiserv...

it's not up to Khaled imho to make mIRC compatible with old scripts... the script writers should make the updates to it!

multiserver has been around for quite some time now... scripters should have had the chance to update everything by now...

most scripts require lots more then just vars changed if it wants to work with multiserver, so it's no big deal to change the vars while you are at it