So personally I really enjoyed the high value targets and the weapon variants they added to the campaign. Often times with so many games once a gamer is released although the multiplayer will be updated the campaign is sadly left to rot. An interesting idea that has come across my mind is why Not use the HVT system to introduce more weapons to the campaign as well? I did generally come to appreciate the weapon sets in Infinite although still ultimately felt slightly disappointed not to see some of my favourites return.
Being as the North Island where Inka 'Saham is appears to be very bare with little reason to go up there it would be a great place to add additional HVTs and maybe fortify it further. These are just my personal ideas but obviously any HVT could work. Imagine you go up there and the Banished have deployed their Ranger Corp, bringing back Sangheili Rangers and Jiralhanae Jet Jumpers. These brute jet jumpers have brought back the Brute Plasma rifle and a Sangheili Ranger commander wields the Ultra Plasma rifle variant which fires the traditional blue plasma and consecutive hits will apply the burning plasma effect. The brute jet jumpers are lead by a captain who brings a modified Plasma Launcher that rather than a charge up time the weapon is replaced with heat venting like other plasma weapons. For the UNSC I cross my fingers and hope for the return of the Spartan Laser.
Small cutscenes or maybe a short missions could flesh out the HVTs and make them a bit more interesting. Of course these are simply my ideas, I’m sure many fans would wish for the return of different enemies or weapons. But I would absolutely love to see 343 to use my ideas or add more content to the campaign