The easiest way to improve the rider class would be to expand on it with the addition of jeeps. The problem with fixing the bikes is simply map designs only tunisia was made with them in mind and later maps are to cramp for them. Jeeps already being present on some later maps should not run into this issue, also knowing that by design should be more stable, have more weight to break through obstacles, and should have better turning due to the nature of its turn system. It would stand out against the apcs bu being faster and less tankier, while standingnout against the motor cycle by handling later maps better and having a bigger crew making it a great addition
Some examples of jeeps to that could be implemented:
Willys jeep
Kubelwagon
Gaz-67
Kuragane type 95
Smoke while being very beneficial to the battle lacks incentive to use. Now it can be used to great effect to enable a push, or get important close range units like flame troopers up to the front, it has no incentive tpnsupport your allies with except for the grand scheme. It would greatly benefit by giving points simialr to building assist.
In tree paratroopers would he great to expand on a few mechanics, while also balancing early tier a bit.
Right now the only way to get paratroopers in low tier was through an event for america and japan, which means german and new players are off to a disadvantage. Having them in tier would also aloow the mechanic of diffrent drops from the supply at diffrent tiers ro be utilized more often.
Ps sorty about any grammer mistakes