This is a very interesting topic.
I too am going to the gym for tt, but my main aim is the reduce the chance of injury. When I do certain exercises, I also try to incorporate a bit of the 'explosiveness' in it, but I am actually trying to build enough muscles so that I won't be affected day 1 after an intense TT session. I've been mainly focusing on the quads, as my knees were my weakness, and after around 3-4 weeks, I'm definitely feeling the confidence boost, and just for reference, I've managed to increase my weight on the leg extension machine from 15-20kg, to now 35kg, 8 reps, 3 sets (It still isn't much, but my strength has improved). While doing the exercise, I try to kick out with control but more speed for the 'explosive part', instead of a slow up. On the court, I feel good moving around, and I am not afraid to keep telling myself to keep moving my legs in fear of another injury.
So I think each to their own benefit: strength vs Explosiveness. Sometimes they are not exclusive.