This thread shows exactly what acoustic guitars are all about. Personal happiness. There is no wrong or right, just what is right for you. Anyone who has ever worked in a music shop will tell you that if 20 guitars arrive of the same make and model, one might 'grab' you. Also, the amount of prep work that goes into each and every guitar before hanging on the wall, would probably stun the average purchaser. (if the shop was a good one!!) This is the same for electrics. Fender was the one of the 'worst' for extra attention in my book.
If your old Takamine has a sound you love, then my advice is to mic it up (whole subject on it's on), and buy yourself an acoustic/electric that you are happy with. The older the guitar, the easier to damage when cutting/drilling. They are best done from the factory unless you have a real reason to modify your old guitar, such as taking it on the road. If you buy one, just make sure you plug it in too, don't just go on the unplugged sound.
We are fortunate here in Australia to have what I feel is the best 'plugged in' sound. Cole Clark. A combination of piezo and under sound board mic's, mixed through the eq. Jack Johnson started producing albums using one, and it's very clear from his albums when he started doing so. But once again, after trying dozens, I found only one guitar that I really liked to play. (I am very fussy) Went back a week later to get it, and gone, and havn't found another like it since. I'm still on the hunt. You can hear one in action just walking into a venue, they are that different. But I love my Ephiphone 'moustache', the Gibson 'Songwriter' is awesome, my Maton custom, and my wife's old Yamaha something or other is just brilliant on any stage. And Cort make some of the best priced, best sounding and playable guitars in their respective price ranges, bar none. It's very personal.
This topic is almost endless, and once again, some excellent contributions. Take it all onboard, and then do what's right for you.