I am and probably always will be a big RTS fan. Back when I had time to play games a lot (read: when I was in full time education) I played quite high level Age of Empires II and Dawn of War. But this has always been a genre that I've come back to. I've just started Starship Troopers Terran Command. I love the film and the game nails the feel of it. That'll probably be what I move onto when I've finished playing Avengers. After that I've got Realms of Ruin lined up. Not supposed to be very good, but as a Warhammer fan I expect I'll get some enjoyment out of it. After that the next big RTS on my list is Age of Mythology Retold. Just cannot wait to play through all of that again.
I think it's a genre that is past its golden era, but I can't see it ever going away, because there is a demand for it. But the great thing about RTS games is that they do age incredibly well, mainly because the graphics on the micro level don't matter too much, and there hasn't been a huge amount of innovation when it comes to gameplay compared to other genres. The upshot is that even if the new releases are a little more limited, the genre itself is always going to be accessible. I also think that if you're a fan of the genre you're probably going to be able to get a decent amount of enjoyment out of even mediocre RTS games. Iron Harvest, for example, is a game that was pretty universally panned, but I expect I'll play and get some fun out of it at some point.
One of the biggest problems that the RTS genre has had is just so many of the big titles (mainly sequels) have been disappointing in recent years. Dawn of War III, Company of Heroes 3, Homeworld 3 and even Stronghold Warlords were all big disappointments. Age of Empires IV is supposed to be decent (I've not played it), but not at the level of previous games (which, in fairness, peaked at 2 rather than 3). I can't think of another example of so many notable games in a genre flopping, and you don't really see indie RTS games either. So it is a genre that's having a tough time at the moment. AoM Retold has been very well received, but outside of that and Terran Command I'm struggling to think of a good, well reviewed RTS from the last four or five years.
TA is one of my ultimate best ever RTS games. Have you played the C&C Remastered Collection?
I have, and it is absolutely fantastic. Exactly what a remaster should be. It modernises the presentation and accessibility whilst keeping the pure, unfiltered nostalgia. It's the one game that I dip into now and again to play a mission regardless of what else I'm playing. If you haven't got it yet you absolutely must.