I can honestly say, the LST haven't affected game play. The biggest gripe I have seen and personally felt, is the Zeta and Omicron crunch. With accelerated teams, before the Zeta addition to the events, Zeta were very slow and cumbersome to get to finish teams off. Even with the steep refresh rate, the new system has helped alleviate the zeta issue. Getting Omicrons is still a pain point. Also, with the extreme dollar mark up on Kyber LSTs, they are not worth the price for no zeta and no omicrons. There are better value LSBs available.
Looking at the overall free episode LST, I appreciated the accelerated toon access to G12 (now R1) with dealing with toons for ROTE missions, so CERE, CK, Young Han, Kira, etc. Bypassing the kyrotech and g12+ finishers has been very nice and let's me focus on other things, like leveling Baylan or JarJar who cannot be accelerated with a token.
Overall, tokens haven't impacted my account that much personally positive or negative in the PVE environment. I do see on my shard, others are catching up and closing the gap quickly. This is forcing me to R9 and R10 PVP toons I would have otherwise waited on so I could level the toons required to unlock PKHO and GLAT to R8 / R9. They have also accelerated my goal of unlocking Levi sooner rather than waiting on a shard where Profundity still dominates fleets.