5.4.3 is a full release, but there's still debugging going on.
As for being a paying customer, I would never have bought a license unless I was absolutely convinced W3T was a fine product--and well supported, to boot.
A license entitles one to a full year's worth of upgrades. I think I started with 5.1.2perl, and IMHO the improvements since then have been well worth the money I spent.
The polls will be fixed, I just don't know when. The PERL version is generally the one to be developed first (v. 5.4.4perl was released just last week), with the PHP upgrade following close on its heels.
I'll be sure and take a look at your hack once my polls are working.