I would like to see this. This is a fantasy but I think most of you would agree. All missiles are as multi-pupose as possible.
1- Conventional but high-end ASCM. The YJ-18 fills this role right now. I hope it also has land-attack capability and can engage moving targets on the land. A lower signature YJ-18 can be procured in the future.
2- A long range surface-to-air missile with limited ABM capabilities and that is maneuverable enough for fighters. The HQ-9 fills this role.
3- A long range LACM with 1800 km range at least (range of land-based aviation for Japan, Australia and US territories + 200 km inland strike). It should have a 400 kg+ warhead and should be reasonably cheap to accommodate the number of land-based targets. Moving target capability depends on the budget. This should work in tandem with the YJ-18. The YJ-18 with its terminal dash and maneuverability should take out high-value and defended targets. The LACM will take out less defended targets.
4- 4 pack medium-range SAM. Should be optimized for low-flying targets. Low minimum range, active-radar guidance and data link are musts. If the budget allows it, it can double as an ASuW missile to deal with asymmetric threats Taiwan can possess. The rumored 555 is a candidate for this role.
5- A cheap 9 pack land-attack guided rocket. This is important for the Taiwan or SCS scenario. Mainland based rocket launchers may be inadequate. Its range should be at least 80 km (the range of most shore based ISR assets according to the US Navy). This would provide a tool to support landings to the PLAN in a much more effective and safe way compared to 130 mm guns.
6- An ASW missile. Newer torpedoes are achieving 45 nm range at 45 knots. Its range should be at least 60 km. As far as I know, the Yu-8 doesn't achieve that range. Maybe PLAN wants a longer range weapon. This may be the reason for the non-existence of UVLS Yu-8 as far as we know it. The ASW rocket should be guided and must have a data link to keep up with the moving submarine.
7- A MaRV ballistic missile with moving target capability both on sea and land. The new missile we saw probably fills this role.
8- A very long range SAM for shooting down tankers, JSTARS, AWACSes, bombers, and transports. It can also have significant ABM capabilities like the S-500. A 150+ km range for tactical BMs would be great. That would also automatically mean point defense capability up to ICBMs. So this is a missile with an emphasis on speed, altitude and range with little concern for cost. We used to hear about the HQ-9C and we still hear about the HQ-19. The HQ-19 fills the ABM requirement and the HQ-9C was supposed to have a 500 km range. I would like the see the role combined to a single missile for flexibility reasons. This missile is very important for the future. The PrSM will come to the island chains in 5 years. This missile may also become useful for shooting down high-speed recon aircraft like the WZ-8 or the proposed SR-72. Proposed autonomous airships (1 year endurance with 3 ton sensor payload) can be shot down from distance using this too if they become a reality.
9- A long range exoatmospheric ABM. Mid course defense against IRBMs and area defense against ICBMs. Also doubles as an ASaT. Probably a low priority right now. A navalized HQ-26 can fill this role if the HQ-26 is really an SM-3 equivalent.
10 and 11- A hypersonic cruise missile and/or HGV. If the technology and budget allow it these should have moving target capability both on sea and land. Such an HGV is a pipe dream as of 2022 but the 055 will probably stay in the inventory until the 2060s. An HCM is possible though. These are for shooting at AEGIS ashore, THAAD and carrier groups.
12- Triple purpose loitering munition. IIR, passive radar guidance and 300 km/h cruise speed should be the specs. Think of a larger Harop with a higher ceiling (for anti-drone use). 1000 km range. It would act as a loitering LACM, SEAD munition and anti-UAV weapon. China already has similar things. 300 km/h top speed is for catching MALE and tactical class UAVs which usually have top speeds around 250 km/h. HALE class and jet UAVs would warrant an HQ-9 anyway.
I think these would give the PLAN all missiles it needs to fight in all scenarios from supporting amphibious assaults to countering USN carrier groups to shooting down satellites and ICBMs. Of course, there is also a need for a missile in the point-defense SAM role which the HQ-10 already fills.