Yes, BTC will grow again. Stronger than in 2017 or not, we will see. It would be nice to know how many altcoins will survive by that time and whether they will follow the bitcoin. The development of the industry directly depends on this.
A lone bitcoin, maybe ethereum, doesnt look as good as a few hundred good coins with different characteristics.
I think most coins that will still follow bitcoin to grow in price after the halving will be the coins that are in the top 50 in the coin market as I see that these are the coins that have real life working products in this industry. Other altcoins are just for short term investment and I dont see them performing that much or grown in value other than the altcoins season.
The major coin that will still affect the cryptocurrency market greatly is still the bitcoin itself, because most investment focus will be on bitcoin then most especially those who would invest out of FOMO and may few of them will consider these few top coins.