Definitely. My amp and cab were very lucky first choice matches for me. The head was thanks to TB itself, and the love and plethora of info on GK. The cabs I got just because they were cheap and from a name I already had a bit of experience with. and they go rather nicely with the GK in the end.
I don't think I'll ever -need- another amp. Though I'd always love to have something more lightweight as a backup. Even if I may never have to use it.
I think if ever I were to grab another full size monster, I'd go for the 700RB-II, rather than the 1001RB-II. Probably try out some different cabs, too.
But getting better basses is on my priority list. I play really cheap Chinese things. They do the job, and I am slowly upgrading hardware. But it would be great to have something like a Warwick, or even a Jerzy Drozd. Something good from the start.