i know about the retries in the mirc it self :P but the thing is, if u were using irc without any proxy, and got dc, i prefer not to connect again. so the restriction for the amount of retries would be only for the script.
on the other hand i forgot to mention above, whenever the script is retrying proxy after another, and in case it stopped on a connecting proxy, maybe a fast command to jump to another proxy ex: /pjump
best regards :)