I hope to increase the score of sappers’ respawn points. Obviously, the respawn point is a facility that has a great impact on the war situation, but the meager score income is unwilling to cover.
Rather than spending time to score points for respawn points, it is better to lead a 9-man squad to throw 27 explosives in a suicide style, hoping to reward the sapper players who are willing to work hard and swing a hammer in the back row.
*FIX “but the meager score income is unwilling to build”
The “meager” xp bonus for those building rally points is a 1.5x multiplier of your total xp. It’s not too shabby 
Anything that gives more benefit for building re-spawn points on the map is welcomed.
Therefore the ones who do, should get even more score out of them.
My suggestion is to add the squad re-spawn point amount from your re-spawn point to something like 45 points per. One squad and taking out the enemy re-spawn point to a 65 points.
That would really make them even more valuable and indicate the value of those points.
Every squad that I have tends to have minimum 1 engineer for this solely purpose. It is a sacrifice that many players are not willing to make but I hate to lose games because there are too many “Rambo’s” instead of tacticians playing on your side.
In every campaign, every squad that I have, I have at least 1 engineer.
That receipt has helped A LOT and it can throw the whole game in your teams favor if you know what to do/ where to place them.
Building those points takes long marching, some “eye” to do it properly so that it will be useful and not wiped out and that it is actually useful.
It takes plenty of time, therefore the rewards should also be still higher.