If you want to move to 2.4, that's a fine reason, to retire it, but I wouldn't be so quick to throw the baby out with the bathwater.
The raidio I use, Futaba 8uaf, is near 10 years old and still functions just fine with the new battey I bought this year, I have a 15 year old 7UGFS (glider radio) that works perfectly fine too, I use it as a spare and a buddy box.


p.s.
Those "Tower" radio systems were built by Futaba,, they're just as good just with a Tower sticker. The old "Cirrus" line Hobby People sold were made by Futaba too