So, I am a person who personally loves rovers. They're fast, they're scary, but they have a couple of problems that made me prioritize tanks as my main factory. And, after loads of matches, I think I know how to make rovers more viable, once more.
(I've even made a whole meme about how tanks are better than rovers, but I'll be serious.) Scorcher.
Main issue: scorcher is easily taken out by raiders, turrets, commanders, and even skirmishers, due to their low range & health. Free metal for the enemy.
1. Buff scorcher health. It will still be heavily countered by riot units in right amounts, and, at the very least, scorchers will be able to approach lotuses, commanders, skirmishers and very light riot units without getting obliterated, making it on the level with other raider units.
Maybe even swap the scorcher's light hull with the ravager's heavy hull. I'm sure that the ravager could use the heat ray much more than the suicidal scorcher.
2. Add bonus damage that doesn't fall off with range.
Another problem scorchers face today is that, just like chickens in survival, scorchers don't deal any damage at range. This makes scorchers more than vulnerable to any kinds of raiders. That, and their low speed.
I mean, come on! Even the kodachi outruns the Scorcher's Terrifying Laser of Death! And kodachi comes from a tank factory, which is supposed to be heavy 'n' scary!
3. Add speed/make cheaper.
Chickens beat good players with quantity. Chickens have high DPS up close.
Adding speed to scorchers will make their laser actually terrifying, as it won't work as a riot weapon no more. Making scorchers cheaper will move them closer to scouts, that take out undefended mexes quickly. That's what they seem to be the best at today, and by making scorchers cheaper, they'll scout even better. What about darts? I guess darts can be given more health and wheels, slowly turning it into a Bolas.... Fencer.
Main issue: highly vulnerable to assault units, bad at defense. Free metal for the enemy.
Ever since fencer DPS was nerfed, they turned more into an utility from a scary rocket barrage on wheelies. However, I liked using the scary rocket barrages on wheelies. Although I think that their DPS downgrade is quite reasonable, with their low survivability, they're just no longer fun to play with. When usual skirmishers, like rogues, are capable of beating riot units, lotuses, low-range turrets, trigger raiders to attacc riots, kiting assault units and escaping artillery fire; fencers practically don't do anything versus any of the enemy's units. They're like a jack-of-all-traits, but at the same time, they get countered by artillery fire to the point where if the enemy has any artillery, fencers are no longer viable. Even against other skirmishers, fencers die quickly;attacking cheap turrets makes fencers incredibly vulnerable to raiders and riots and said skirmishers; and artillery. In fact, if fencers would have any survivability against artillery, perhaps I would change my mind. As an alternative, buff their strength against things that are not artillery, and turn fencer into a walking turret, exclusive to the rover factory. That sounds fun.
1. Add damage.
That might turn them into a unit that is a tad too strong, but artillery counters Fencers well enough already. Adding damage should also make fencers more viable in skirmisher vs skirmisher matchups, and more useful for defense. Just... make them deploy slower, maybe taking 2-5 seconds to unload. Please.
2. Add armor when unloaded. (50-75% damage reduction)
This should raise their health without making their concept move far away from their original purpose. It should help in skirmisher vs skirmisher matchups as well, and at soaking artillery shots, the one thing fencers are so vulnerable against.
3. remove their gimmick entirely and make them move while fire. ROCKET PICKET ON WHEELS, BABY! Dart.
Make their AI run away when they see an enemy. Please. PLEASE, THEY NEED TO BE A BETTER SCOUT!!! They can have pre-set rally courses that trigger once they see an enemy, it should make them last longer, it should be so much more fun! And the last suggestion.
Give units an option to be assigned to be rebuilt in one of the factories if it gets destroyed. It should help when managing tiny, vulnerable utility units. (Does not apply to striders.)