of course its possible, Blender is libre software and like all libre software gives access to its source code , so you only need to go in and integrate back the old source for boolean modifier.
if you are not a dev and do not want to learn how to become one then you are out of luck, a user has very limited power over software, especially libre software. The only thing you can do is wait for a dev to accidentally take on boolean modifiers because the ratio between user and devs right now is around 10000:1 which means we get 1 dev every 10 thousand users.
As you can imagine the supply is nowhere near enough to satisfy the demand. Devs todo list is about 10 thousand times larger than that of an average user.
if the Blender dev is hired full time and part time and your feature request is very popular its likely that they handle it. With devs working for free which make the majority of Blender devs you are completely out of luck even with popular features because they get to decide the area they want to work on after of course getting approval on their ideas from main devs.
So overall its extremely hard for a user to get his feature request dealt with because even if a dev agrees its important its extremely unlikely he will find the time to deal with it when his todo list is so long and there are much bigger fish to fry.
On the matter of 2.8 , it still not an “official” release , it still has a ton of bugs and tons of features missing. Its also highly unlikely that with the 2.8 coming soon will be actually stable or have back all the features from 2.79. To get to the 2.79 I will dare an assumption here that this wont happen until 2020. Still I recommend to people to switch to 2.8 because a) its awesome b) it still move forward and is highly likely it will see a lot of new changes especially now with the Blender getting much better funding and a movie on the making (an asset manager is an example on what may be coming in the 2019).
Conclusion: Blender devs are nowhere near enough in numbers to satisfy even popular feature requests. They want to help but simply lack the manpower to do so and are always in desperate need for new devs. if you want super stable , reliable and fully functional stick with 2.79 at least until the end of 2019. If you want cutting edge then jump in 2.8 ASAP but remember the “cutting” in the cutting edge is not just a fun term, it will literally cut you in many different places , painfully at time