Hey, cool! A comment-question! (This is Kaysper replying with the mod account, btw.)

I was wavering back and forth on whether to go with a new TD, or keep going with the old one; I ultimately figured it'd be safe to keep going with the older one for a little bit, since it's a pretty small game and the comment count on the current/pre-game test drive is still at manageable levels.

So short answer, yes please, feel free to keep using the old one!