With all the mods, you are up over a grand and there are some very nice tables at that price range.
Unless one is a DJ, there is no reason for a TT to be built like a tank. The technics was designed as a DJ table.
This is all open for debate and has been debated a lot here before. Yes, there are very nice tables available at over 1K, but I feel that the 1200 is one of the ones that would be worth that investment too. I have one and consider it the best ever made, wouldn't trade it for any other TT.
The 1200 was not originally designed as a DJ table, it was designed for consumer use. It was built so well and rugged that the club DJs adopted it for their purposes. In fact, a better description may be that it became a "turntablism TT". You are well informed, and I'm pretty sure that you know this.
"No reason for a TT to be built like a tank" -- C'mon, I try to be careful and I know what I'm doing with electronics and mechanics, but I still make mistakes and break stuff. Great build quality is near the top of my list of priorities. I have a 1200 and have no doubts that this will be the last turntable I ever buy, and I'm only 30yrs old. Also, some people may have children running around the house.
All in all, it would be foolish to dismiss the 1200 because it is a "DJ turntable".
To be fair, there are a couple of nit-picky items on the 1200. The RCA and ground connections are hard wired to the TT, so you can't use better quality cables unless you mod that too. Also, they don't do 78rpm without another mod.
But, now you've got me curious, what is it that makes the stock tonearm inferior? What in particular do you look for in a tonearm? Any good recommendations at a good price? I'm interested in bang for the buck, sound quality, and build quality.