I can make a poll on this, though I'm in agreement with the original idea so you know, what the end result going to be!
why waste resources on a poll if at the end, since You are the forum founder, You can do whatever You like
but remember what makes somebody happy will piss off somebody else.
it will certainly piss me off if the option is NOT customisable
I usually have a couple of tabs open on each forum, so that when I reply I can lurk around for references
for me having tabs/windows sprouting around will be a nuisance rather than a help
two clicks ( close the tab/window and select the good one from the zillinons of tabs/windows) instead of the click on BACK
personally I am more than satisfied with right clicking
or being a happy APPLE user using the left index finger to hold the CMD key to open something in a new tab
works on safari/firefox/chrome