This has been one of the best seasons for LCS imo. A lot of people weren't around during Season 3 and Season 4 when we had 40+ minute farm fest games every single game so they can't really appreciate how much faster the games are now. It was very common for games to go into 30 minutes with only 3 or 4 kills total with a lot of turrets still left up on the map. This season has been full of tons of early skirmishes and teamfights and is a lot more interesting to watch than before. Having games end on average between 30 and 40 minutes is also great because you aren't sitting there looking at nothing for an hour.
Especially patch 8.11 and 8.12 this season. Seeing all sorts of pick in top and bot was super fun to watch and made LCS a lot more interesting. Unfortunate that it only lasted a few patches. The past couple of seasons I really only watched LCS every so often, but this season I've been tuning in almost every week. Just my opinion tho.
Not to say Season 3 and Season 4 were bad seasons for LCS, but just that there have been a lot of improvements to the pro scene since then especially compared to the last couple of seasons.